Dave the motor has to be 1999 or older.

D. I'm aware of KA head on L block but that is not a cheap do it in your garage thing.

Vixen are those two motors listed in CAMS / IPRA rule book and can it be accessed online? The key is you have to prove that it was raced in a recognized series.

Here is where I'm at; I'm building up an A15 right now to replace the blown up one, I've sent the cam out to have it ground. The new motor will be slightly higher compression with a slightly more aggressive cam. My thought is it will be pumping out 105-110 at the wheels which is 150% of the original motor stock. As everyone knows I run these things for several and getting more than that means going through the motors annually, which I don't want to do.

My thought is a more modern engine will be much easier to get to the 130-150whp range, I'm the only car in my class at most events but my goal is to get high overall finishes. In the small bore group I run around 5th out of 25th overall and in the B-sedan group I run 9th-10th overall. The B-sedan group is full of 510s and BMW 2002s belting out 175-200whp. If my car were putting out 160-175whp I could probably make the top 3 overall in the B-sedan group.