been doing a bit of research on front disk brake conversions, what do you guys think of the pintara/vs rear caliper conversion? i honestly think the caliper is a little small. i have that setup ready to put on just not entirely sure i want to run it, thought maybe if i put good pads and run vented rotors that might help it but not sure
 
what do you guys think is the best caliper or size caliper is best to run with the rear drum brakes? im thinking of trying to adapt the s13 or 120y front caliper and run a booster (trying to keep in the nissan family). if i can make it work im going to get a caliper bracket cnc machined up
 
just want opinions/ideas, trying to brain storm

I think quite a few jap cars had them

Commodore caliper piston is too small at 1.5"
You need 2" or 2 1/8" to get good braking performance
Otherwise its just all push and no stop

don't waste your time with the pintara rears on the front. Not worth the headaches, and performance is poor. In fact i'm still running the solid rotors from the pintara rears, which I believe limit me some what. I would be using the front setup off the 1200, but changing the calipers to something bigger, because the rotor is a bolt on type, and you may be able to use corona calipers, (I tried them with the pintara rotors but they didn't fit the rotor for positioning but bolted to the brackets sweet as). Use a 7/8 master instead of the 11/16, this will help with reaction time.
 
Niel is the expert, but I have found this to be the case. I'm saving up to up-grade the brakes on my car to much bigger calipers, if the kits are still available.