TorqStorm® Slant 6 Supercharger Kit

Holly's are the easiest for blow through as demons

Edelbrocks/Carter's don't work well as theirs not really a source of nitrl floats..
I know of one guy that started making them for edelbrocks, but not sure he still does or not
Mark Burton was his name

As for cfm and blow through...carb cfm doubles
So 500cfm carb will now he 1000cfm
650 is nkw 1300
750 is now 1500
It'd be more ideal to do 390 Holly for blow through on a 6
Or holley with a 3 barrel conversion.