Its a .020 over bore on a L28e. Block is early 280zx, head is p90, head gasket is felpro. I run just cheapo gear oil in my tranny. I ran a factory turbo up to 200whp and 275wtq. Center force DF till about 250whp and 315wtq. Now runing the clutch below.
This is the clutch I a runing (not where I bought it, dont know anything about them)
http://www.spooledmotorsports.com/miscpage.php?misc=ACT%20Clutch%20Kit%20(79-83%20Nissan%20280Z%2C%20280ZX%20Turbo)%20-%204%20Pad%20Race%20Disc%20Version
VIDS OF MY CAR
OLD VID only 5 psi LOL