I need some help with figuring out what thread inserts I need to buy to repair the threads on the housing. The bolts I have don't seem to match the parts guide; I figured that is because someone replaced them with bolts close to what the original ones were. For the running boards to cover to housing bolts I see 21443-S; 7/16-14 X 0.94 (15/16; I am guessing a one inch bolt will work here). For the parking pawls I see 21441-S; 7/16-14 x 1 1/4. So what insert do I need to get to repair the buggered threads?
By the way, I am thinking of replacing the bolts; some are buggered up as well and will need to be replaced. What grade do I get? I am guessing these don't need to be high strength bolts.