what do you need to turbo our small bolcks?

I'll even reply again to let you know......

You "could" turbocharge your engine with the estimated 10.5:1 CR...but the amount of boost before you run into detonation ON RACE gas would be at max 16 psi.

Turbochargers, LOVE engines with 7.8:1-9:1.

THE Numerically LOWER CR Number, the MORE Boost a engine CAN ingest without detonating....but also is even more soggy down low.

Ideally...8.5 is the sweet spot.....you can run up to around 1.2 bar (18 psi) on Pump Premium, above 20 psi, you want 100 PLUS octane...above 28 psi....116 octane ONLY.

that is all for now.