Turbo....

Rusty, it’s really application and fuel dependent. Pick the octane level you are comfortable running, decide how much power you want to make, and how much boost it will take to get there. Then build to suit. You can run 14:1 with 30psi on methonal but 10:1 and 10psi will not last on pump gas. I’d say for a street car run as low of a static compression number as possible to keep the engine docile and easily tunable out of boost, but enough compression to keep some off boost torque. Typically that will end up around 9.5:1, a good compromise for a street car. The slant has a limitation on cylinder head sealing so careful attention must be placed on machining the deck and head and IMO studs and MLS gaskets are a must.