I put a 56 272 in my '34 5w with an adaptor to a '39 trans... LOTS of work to make it fit, firewall recessed (it was chewed up and half cut out to begin with), front crossmember reworked, custom engine mounts, had to use ramhorn exhaust manifolds because any other stock exhaust manifolds would have dumped right into the pedals/steering/oil filter... It goes pretty good and looks nice, but for ease of install I think I'd just as soon put a flat motor in next time.
