My brother has an extra 280zx engine and said I could have the flat top pistons out of it. As I search around though, I get different numbers on what the compression would be with the stock U67 L20b head. On one post, I see 10.87, on another I see around 10.11. I have access to 93 pump gas in my area. Would this setup be possible? I also intend to add a 480/280 cam from Isky and do some port work. I have the ability to control the timing electronically via timing map.
I also read about L18 pistons but I am not able to find any of these at all, let alone in 86mm.