I'm looking to build a small block 400+" based on a 340 replacement block, its gonna mostly be a street car, but will definitely see the track a lot. Looking to run mid to high 9's. I need to pick a turbo, not sure of sizing, I have been looking at the Borg Warner s400sx4 75mm with an a/r of 1.32, but not sure if it will work for what im trying to do.

Any help would be great!