I'am going with 8:3.1 forged turbo pistons!Which I think ends up to about 8.5:1 So now I hear a lot of rant thats its better to go 10:3.1 or higher with our turbo systems (Hahn or star) what ever we'er using!????:o
Hahn,Wiseco,Eagle,MSD,TurboXs K&N,mopar,AEM,Greddy,Vortex,apexi and a bunch of other stuff..