just shoved a 454 in my big bolt. had to move the rad forward about an inch and use electric fans. No firewall mod was required although it is really close. Had to fab up a new mount for my steering box and make a new shaft running up to a new column, still using the original wheel though. I used cross members from speedway for the engine and tranny. Takes a bit of fab and had to cut one original cross member out of the way, but it all looks pretty good now. I'll see about loading up a few pics
