I have an auto tranny in my 89t. I haven't driven it, but I was looking to make ~400RWHP. I read somewhere they could only hold ~350 RWHP. I thought about it, and I want to eventually, get a 5 speed swap cause I like the feel of the turbo spooling. I almost get bored while driving an automatic. I HATE electrical wiring. Tis why I am kinda hesitant on doing it, cause i know you have to do something with the tail light wiring. Oh well just my 2 cents.