Ok, new here, just got the 62, it's a 235cu 6cyl... it needs a whole new front axle and the rear looks like it's from some unknown 2WD...so I'm thinking replacing both axles and getting a paired set - thoughts on this? thanks for any ideas/advice on what you would do. PS I can see the 2018188 patent # on the current front axle pumpkin and the rear just says GM15 (it's a 12 bolt pumpkin)...