Any ideas on what I should expect, power wise, from this setup? It's a 1960, 361 Golden Commando, 383 forged crank, .030 over, 292/.509 Purple Cam. Factory 69 440HO manifolds, thru 2.5 exhaust to 1 chamber flowmasters. Electrick cut outs before the cross over in the exhaust. Pushing thru a 9 in...