I found this while looking at A-Series bits a while ago... but only remembered it this morning.
 
https://www.peterzekert.com/for-sale/engine/engine-components/92-datsun-competition-oil-pans-wet-and-dry-sump
 
I think having a cutout on the extended section is a great idea.
Would make changing oil filters alot easier.
 
Also loos like the pickup is extended by simply adding a spacer between the block and the standard pick up.

Looks like a great bit of gear.
Looking forward to seeing the progress..

D,
 
Given that it was you that gave me this idea in the first place!
 
http://datsun1200.com/modules/newbb/viewtopic.php?post_id=487334
 
Im still keen to mod the sump, for coolness if nothing else. 
Ive got a crank wiper and windage tray coming from Kevin (at crankscrapers.com), although that has been delayed by over 12 months due to his illness.
 
both of which are unneccessary, but ads loads of coolness factor

 
Just some photos to show what I am planning.
 
You can see that the SR20 sump is pretty close to the standard datsun sump in size.
 
I haven't yet ordered the SR20 flange - ill get that made up locally as the premade ones are $200 + delivered.
 
I suspect that when I get these drawn up, that i will get more than 1 made due to the minimum order qty deal that most places roll with.
 
One question though - My dealer has kindly provided this sump to me, but I suspect that it may be an A14 unit, as it doesent have the small side ridges for the extra rod length.
I would never normally question my dealer  - but I dont want to cut up a perfectly good sump if its the wrong one.
 
I am hoping that I am just bieng pedantic for no good reason and that some a15 sumps didnt come with the ridges.

D,
 
I havent had the chance to visit the dude since we spoke last - ive been busy at work and dealing with the xmas peroid chaos. Hopefully the world can get back to normal soon and everythig returns to normal.
 
As for the sump, Ive askedover at 1200.com for confirmation, but your suggestion is something like I was planning.
Lift up the bottom of the pan some, while still retaining a slope for drainage, and keep the total depth of the pan the same as factory so that pickup tubes and dipsticks are the same. If I make the pan deeper, ill have to extend pickups, dipsticks, and then ive got the issue of ground clearence.
This is going to be a street driven car, so potholes and speedhumps must be passable.

your dealer sux....

So a minor update
 
I have the motor getting built for me now.
Just struggling with time so I am paying to get this built.
 
I am aiming to have the car running by xmas 2020 - not finished - thats a bit keen - but running and driving, even if Im sitting on a milk crate!
 
Im still looking for an L28 oil pump to mash together with an a-series pump for the higher volume.
The 'instructions' on datsun1200.com  (http://datsun1200.com/modules/mediawiki/index.php?title=High_Capacity_Oil_Pump)
 
are not yet clear to me - I need to think about it some more this week as to how I make the spacer and why its needed.

double post

So i have worked out the oil pump mod
 
Going through my "complete" gasket set
 
it doesent contain any oil pump gaskets - not helpful.
 
looking online - Bprojects has some for drug money.
 
I need 
1 x block to pump gasket
2 x intermediate gaskets (go between the lid and the body)
 
given that the tolerance between the lid and the body is so small (its its a 2/3mm gasket the pump wont work) can i just use goo like ultra black?
 
as for the block to pump gasket is this spaced specifically so that the cam gears mesh correctly? - can I just use goo here too?
 
https://www.ebay.com.au/itm/DATSUN-1200-Oil-Pump-Repair-Gasket-Fits-NISSAN-B10-B110-B210-B310-A12-A14-A15/221541295306?_trkparms=aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D2%26asc%3D20160908110712%26meid%3D9ceaa5787e1142e0a453151906b988c1%26pid%3D100677%26rk%3D4%26rkt%3D30%26mehot%3Dnone%26sd%3D371332037370%26itm%3D221541295306%26pmt%3D1%26noa%3D1%26pg%3D2386202%26algv%3DDefaultOrganic&_trksid=p2386202.c100677.m4598
 
https://www.ebay.com.au/i/371332037370?chn=ps&norover=1&mkevt=1&mkrid=705-139619-5960-0&mkcid=2&itemid=371332037370&targetid=945829240234&device=c&mktype=pla&googleloc=9070708&poi=&campaignid=9772799703&mkgroupid=100117146376&rlsatarget=pla-945829240234&abcId=578876&merchantid=9591752&gclid=Cj0KCQiAhZT9BRDmARIsAN2E-J0tXEK4jFGf9aqUTHZcY0Bt0tbrUFhJYoqaDuUMayAAT9ayyAg7ekQaAp8TEALw_wcB