I have an 88 SETA (2 door, manual, factory lsd) project car that got put on the back burner a couple years ago and recently I decided that I want to slowly build it for Spec E30 racing.
I’ve skimmed over the rules and from my understanding you need an m20b25 engine.
I’m fine with taking out the m20b27 and swapping in an m20b25, but IDK if that’s OK with the rules. Does the car have to come from the factory with the m20b25?
I would also be using a computer for an m20b25 of course.
I believe the transmissions are also different, so I’m guessing a transmission swap would be in order too.
Though I have LSD already, I’m thinking it’s geared differently than the IS’s LSD. Right?
Swapping the engine and transmission isn’t a big deal to me. I just want to make sure it’s OK to do.