hey there! i have an 84 shelby charger N/A, i am gonna be running a dual carb intake with 2 downdraft weber 38's. an old nos mechanical cam .528" lift 288/288 duration 72 overlap and 108 centerline, direct connection race head ported, polished and big valved, turbo automaic trans, equal length axles and 11:1 pistons for which ever motor i SHOULd use. so heres my question: do i use my 2.5 tall block? or my 2.5 common block? i have both so budget isnt an issue, and this is gonna be a street car that i will OCCASSIONALLY take to the drag strip, any advice is appreciated and thanks in advance!