I did the conversion to a '56 235. But on my next one i will do the orignal engine, partly because I ran across a rebuilt one--but also because there is a host of troubles that crop up when converting or putting the 235 in. I went out into no mans land a tad--with the front mount. Then had to cut the firewall and reweld a bit. If you have the money you could have the old one rebuilt but it may cost alot because of the labor on pouring and scraping the bearings. Besdies the front mount I also had to get another bell housing from a 41 i believe, and a clutch from a ' 56. and kind of just make the pedal work by a little fabricating and bolting. Things are jkust more straight forward if you have the original--plus my numbers happened to be on the engine (vin type)