Hey guys i have a 565 BBC Iam thinking of going with s480s for my twin set up. It's 8.5:1 compression with merlin 320 heads. Precision says I need 7675. This is a street car and Iwant pump gas but will run a mix. What kind of lag or lack of lag will iI have with the s480s. Or is there a better turbo in the same price range I should run on this motor. And does anyone know it stainless works turbo manifolds will fit my 68 Camaro I'm looking for good throttle response and make power to get into th mid 8's in Street trim.