I've heard that the Small Block Chevy is the most abundant engine on the planet, there's five of them in our shop now, the one on the left is for a demolition derby client, we built it out of a used 604 crate motor, it was taken out of service because it had picked up a miss. We found a broken lifter and replaced them all with a new set, the one on the right is going into our current project, there's a 'B' mod motor setting in it's rack, a torn down 'A' mod motor on the engine stand and workbench, and an un-assembled 'A' mod motor in the storage room. I race Chevy's but I drive Fords, go figure. We got the rear end in place, the ride height holders were too short so we had to use another rear end holder. It works for racecars but not for low riders, I see some modifications in the near future.