Good evening everyone. I'm considering purchase of a 235 out of a '58 passenger car to put in my '50 1/2 ton. It already has a '56 235 in it, but it's in bad shape. My truck is 6 Volt now, but the new engine has a 12 Volt system. Is there anything other than that I need to know about (mounts, etc). My truck is a 3 speed. The new engine still has a Powerglide (?) transmission attached. Thank You in advance for the help!