I was thinking about doing the same with my '83, then realized that the geometry of the e21 sucks and so does the 1.8L engine. That's not to say that these little guys aren't reliable and dependable, and get great gas mileage... You might want to think about turbocharging your existing motor, or swapping in a baby six (from an e21 323i). You could also dump fuel injection in favor of going with dual sidedrafts.

I was hoping (before I learned more) that the 323's were 4 cylinders. I want to run in a 4cyl class (ITB? ITA?) so I need to have a 4 cyl engine. I may break down and do the dual sidedrafts, but am nervous about a turbo. I wonder If a newer engine swap would violate class restrictions...hmmm that may be for another forum. Thanks, though. Soon I'll have a page up on the ins and outs of this E21.

-N