[cyclone427428]

I have a 1969 428 Industrial Irrigation motor. I would like to put it into my 67 Fastback mustang. I currently have a set of D2TEAA heads on it with a 2 barrel intake(not much of a performer). I've been starting to get parts for it time to time. I have so far a 800 cfm Holley Double Pumper, Port O Sonic Offenhauser Intake, Lunati drag cam 295 Adv. duration In./Ex. with .560" lift and a 2500-6500 powerband, with new lifters. Alot of people have told me to get a set of Edlebrock heads, but I was looking at Dove's cast iron 428 "Canadian' CJ heads. I want to get a set of 2" primary tube headers with 3 1/2" collectors. I'm shooting for 550-600+HP. Anyone have any thoughts or suggestions? Open for ideas. Thank you.