2006 z51 vette

iTrader: (10)

I am building a 6.0 L motor (LQ4) with 4.030" pistons (wiseco), Callies Compstar H-beam rods, 317 heads (minor port) work.. with Edelbrock pro-flo XT 7140 intake with LS2 90mm throttle body with truck manifold home built kit, single turbo (yet to be determined)

Questions:
1.) what valves to get?
2.) what springs should I go with?

thanks..