Hello fellow 1k owner
pls put some photos up of your ride on your thread and your reasons to want to go non pollution gear rotary as opposed to say a turbo A15 which done well these days can make over 200-250hp atw and plenty for 10 second quarter mile if all else is setup properly and you are a good peddler.
 
Diff choice I used for my 13b rotary was a 620 ute H190 diff shortened by an ex- owner of 50 plus 1K models he had done for his turbo fiat 1800 setup he never finished. I used the original at first till I heard some whinning after a spirited drive before being done by the men in blue for an un-engineered conversion. The noise was the problem it got people noticing from maybe 500m away in all directions.

It was a single spinner at the time but I didnt care as long as I didnt damage anything which is my pet hate with cars.
Im very mechanically sympathetic compared to the burnout zombie fever that is widely spread over the outer suburbs.
 
The diff is now owned by another 1K coupe owner who has put in an Nismo LSD I sourced for him from Japan recently. He has a buick 1972 v6 with 1ggze supercharger and DCOE45 which I dont like but the dude has his own agenda.
 
There are alot of ex 1k owners with lots of unfinished bits there and there but finding them is very hard when you need the parts so with these cars you have to be patient or filled with deep pockets.
 
I even had a trusting friendship with a bloke with heaps of 1ks but he was very anti social and the council ended up taking all his 1k cars which broke my heart the most as he couldnt be bothered answering his neighbours and council official requests to clean up his litter of cars and parts, which was a big pollution problem with oil patches, a real eye sore.