building a FAST legal small block

I have pondered a lot about a 66 D/Dart clone in the FAST class and if they would allow it. Think about it: The D/Darts had solid cams, headers, holley carbs right off the dealer floor. A 360 shortblock with some closed chamber 273 heads, although the heads would be a restriction I think. Traction would be a big issue. Oh well, just thinking out loud.