Hey guys after a long time im finally building up my a12 turbo motor. I originally bought it carby turbo. Atm im replacing a few things. Im using a duropro gasket kit. Im not sure if the headgasket is good enough though? Im using a standard bottom end and a h89 head. the heads at the machinist getting faced, pressure tested and im using Stewart Wilkins double valve springs. I am also going to purchase arp head studs as well. I dont expect to reach 280hp but I am interested to see what I can get out of a pretty much standard a12/h89 combination. The carby turbo probably will go back on untill I can save some more for efi. Doee anyone have any advice or positive input? thought it might be a good idea to ask :p