Fast ETs Using a Dual plane ( BB & SB )

Thank you
No air gap of any type
I bought the best modern ( NEW ) RPM and it was professionally ported and inboard ( 4 ) bolt holes welded up and converted to W2 bolt pattern since my unique heads are the same we are also allowed up to a 1" spacer under carb.

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Ok cool so that's the one Jerry did. So.....stop all the mystery. WHAT CLASS racing are you doing? lol