Actually I am looking at Summit for the parts, i plan on using the edelbrock performer package minus the heads, for them I want to go with the summit double hump heads 2.02/1.60, with the 64 cc combustion should raise the compression from 8:1 to 9:1, The only reason I am going this way is because of the short block ( 4 bolt mains ) a short block rebuilt from summit with 4 bolt mains will run $1100.00. If i were to go with a crate then It would definately be a big block for a drop in 454 im looking at $5800.00 plus assorted parts and not to mention the trans and drive line upgrades. Budget dictates all, not to mention the application, Its just pulling a truck camper, It would be like swatting a fly with a sledge hammer.