I once had a pontiac tempest sprint convertible ( 1966)..it had a stock inline 6, overhead cam, 4 bbl carb, and capable of a dual exhaust, 3spd on the floor. I belive it was a 230, 235, or maybe a 250.. the intake on that might work...( if you can find one )
oh ya, on a good nite, I could beat a 327 off the line..:>)