re; 9" fords
JMO, either a 12 bolt or a 9" will probably be fine for you on the street, But if you are going to WOOD IT, every time you leave a stop, you might want a dana 60. If I had a 632 cu. in. on the street, the state would take my license. :lol: No way I could resist the temptation. 35 splines are stronger than 31s but don*t know if they*ll fit in a factory carrier. Hey, keep it cheap, you*re going to buy lots of expensive gasoline!