What supercharger is best for my application?

[NO SLO PK]

FWIW, I'm running a Procharger with 11:1 compression on iron heads (don't ask). It works, but not reallly well since it detonates sometimes. I'm limited to about 9psi at the intake, with initial timing around 8-9 degrees. I also have to run the A/F a little fatter than I prefer.

I'm putting on Edelbrock heads which should drop compression to just above 9:1.

Hope this helps