My friend is building an engine for his POC class and needs to know what was the highest compression offered in the stock 2.0 4 cyl. by Porsche. It can be from any market, U.S., Europe, Asia. Thanks for any help.

stock - 8.0:1 - euro pistons

right?

The European Pistons provide 8:1 compression. I think in 2.0L form, that was a shigh as it got.

Thanks, was there any variation in the size of the head chambers or just the pistons.

not on 2.0s... the heads were different with each engine size...