Hello there...new to here and not really a hot rodder but looking for some motor help. Some background, this motor is going into a 71 4x4 suburban, has 1-ton running gear, t400, 35" tires and will be a daily driver and do it all truck. It had an 89 tbi 454 in it that was pulled prior to purchase and has all wireing and ecm and plumbing still on burb and would like to keep it tbi if thats the consensus. I have a 454 that is 60 over with 346236 heads with roller rockers and comp cams 11-234-3 Extreme Energy cam. I know the heads aren't the best and looking at possibly getting some 781 heads and swapping rockers and such. I do have a set of 396 3931063 heads available but reading different posts it seems they aren't a good choice. If I stay tbi I do have an Edelbrock Performer TBI manifold. The truck forums I belong to have given me different/conflicting responses as regards to cam, heads, tbi. I am not opposed to running a carb but the efi stuff is all there. Any thoughts? Thanx