1973 Plymouth Duster NEWBIE!!

Welcome to the forum, there's lots of info here. I can't answer your questions myself but I know I've read about the tire size question you have so if you look around you'll find it, try the search feature. I'm also going to be converting my 70 Duster to floor shift at some point, not sure what all you need to do other than get a steering column without the shifter on it to make it look right. Probably need a different length linkage to hook it up :-k