There are 4-door 325's but the 2-door ones look better!

E30 M3 with Alpina lump isn't that good: too much weight over the front and too much overall weight. Performance wise they weren't any quicker than the standard M3's but they were more relaxing to drive quickly as you didn't have to wring it's neck everytime you wanted to get somewhere in a hurry.

Had an M5 as well, very understated and HUUUUGE fun drifting that big old barge!
Builds up speed at alarming rate but doesn't feel fast