I have a '32 Vicky with Ford 302 and 5speed trans. I'm too old for all that shifting and want to swap trans to Automatic. It's an after market chassis w/Heidts front end. I don't know which trans to use...C-4/C-5/AOD. Concerned about the weight and the space, this is my 1st Ford experience ever. Anyone been thru this? I'm new to this site. thanks