Napa sells rebuilt/ reman'd engines too, some even build them up right there at the store, using there off the shelf parts. My teachers son bought a 302 from them and this is exzactly what they did, they ordered the block from NAPA then put it on the stand, took a week building it then when it was done, called him and rolled it out to the loading dock and on the back of his truck, then when the bill came up, everything was seperate with own part#'s on the receipt, and somthing like 100 bucks labor, all in all he said it came to like 1,350. GM probably has the best deal for what you want tho.