I copied a "How-to-do-it" from the November 1956 Hot Rod magazine. They show step by step of getting the Chevy mounted. You can use the original crossmember but need to upgrade to bigger mounts, and use front mounted motor mounts, they line up perfect and give clearance to the stock radiator. The biggest hurdle is the steering arm, you need to do a 4 in drop and gusset it. The firewall was very minimal when it came too cutting and I had to make a new trans tunnel.