best years and models for spec e30?

[ptownTSI]

whatever is cheap, and has a strong running engine. you are going to replace just about everything else and the interior doesn't matter either.

[Bavarian3]

Basically an S (for LSD) and something straight (chassi wise).

[kmsnsx]

Hey guys, I'm currently looking for a spec e30 candidate and I've been hearing different thing to look for like '88 and up have a better fuel injection system or definitely get a car with lsd. Can you guys chime in with what you think are the must haves and best years or options to start with? Thanks.