Need help - 4AGE KE20 Questions

4 hours ago, parrot said:

In a nutshell.  Since you are in the US you are lucky.  As these parts can be sourced locally and pretty cheap.  Buy a local T series rear end out of a TE27 as it is the correct width and is already leaf spring.  TA22 is wider and coil sprung (unless very early.  An early (Zenki) LSD centre will bolt in possibly needing to shave the axles.  If you want to convert to disc brakes that's up to you and you can research what fits.  You may want to pay someone to design a fancy axle location setup if you are really going to have that much power.  There is no such thing as rear struts in this shell. 

I disagree with KE70Dave about the wiring to the ECU.  To get it all running properly is complicated and will directly impact the driveability and practicality of the car.  If going any bigger than 270 duration cams, or fitting ITB's as you say, will require an aftermarket ECU.  Not sure what smog rules are in California now but you may want to look at that first.  A lot of people build cars to 95% completion, then sell them because they can't sort out the engine management properly.  In a standard AE86, there are three seperate looms, engine, dash and body.  If they are incomplete or not talking to each other, the car turns into a pig.

Yeah, looking into the TA2x rear axle swap more it seems pretty impractical. I think the TE27 rear axle is gonna work a lot better for me, and then just bolt in the LSD as you suggested. As for the motor, it's just being built in California. I live in Texas, and the rules here for vintage cars like the KE20 are pretty lenient. I don't even need to run a cat here. I think I'm gonna go for a Haltech or some other standalone and buy a universal kit, and just wire the car as needed. There are a couple kits out there, and I'm just deciding between which one. Thanks for your help so far!