I have a 78 K20 frame that I'm putting a 79 K10 body on. This is gonna be mostly a driver/truck puller/fun truck. I have a 400 out of the K10 that I can rebuild. I already have the heads done, but I need to rebuild the shortblock, but there's a chunk out of the block by the starter bolt hole. Or I have a 1992 350 that I could do a 383 with. So I'm asking you, should I piss with the 400 and have the block welded, or should I put a crank and pistons in the 1992 350, roller cam and vortec heads?