As far as blocks are concerned....Get the earlier blocks with the thicker webbing or the later 94-97 (i believe) Set up for roller. There is a ton of nickel and dime parts....BUT You can find alot of used stuff on Ebay. I just saw a 351 EFI Distributor the other day for around $30-50 shipped. Which oddly enough has a build quality better than the MSD that everyone runs out to buy. You can't go wrong with OEM parts.....AS LONG AS INTAKE AIR DOESNT TOUCH THEM. lol You don't want stock heads on any performance SBF If you can get the block and some AFR 185's at least i would get some dished pistons Football factory rods. Spider intake. The brunt of your money will be on the HCI Figure about $1000 more to build a HCI SBF 351 than a 302 but thats because intake prices are outrageous and you will need to buy heads better suited for a 347+ than a 302. Contact a local Junk Yard for a 351 or "Car-parts" website.