Re: 1.5L Head to Raise Compression?
It can be, it depends what you're striving for.
Finding one. They were the middle option on 1968 Kadetts only. Base engine was 1.1, middle was 1.5, top was 1.9.
See above. Good luck!
Low compression pistons were rated at 7.6:1 by Opel, but were closer to...