great idea. maybe elaborate on the camshaft? are you using the blower? heads dont flow RPM per se,they flow cfm and the cam duration gives the heads "time" to flow and valve lift working with heads will determine a total possible flow of air.how much power do you really need in that car? are you looking for the power to be linear? what size carb(s) are you using?
are you using a stock GM block? if so,2 bolt or 4? what CR will you use?