It doesn't get much better than this. This bolts to the top of a 4 71 supercharger. The carburetor bolt pattern will work for the Holley 4 barrel and AFB 4 Barrel carb that bolt pattern. This can easily be polished or sand blasted to match your blower.

This kit includes:

1 aluminum mounting plate to supercharger
4 stainless steel bolts for mounting
1 free gasket for AFB or Holley Carb