I am in the Midst of swapping in a 350TPI/350 A/T in place of my old and tired 258/T5 tranny. I am considering beefing up my AMC20 rear axle only because I have in the past invested in a Detroit Locker. My concerns are that even though I plan for the most part to keep the front end on the ground while on pavement that in time the 20 will eventually give way under the horsepower. I am hoping that there is someone out there that has been here before and has some good sound advise on where my money might best be spent as I definitly do not have money to burn but at the same time do not want to spend good money after bad so if upgrading to a stronger Axle is the best bet then so be it and if so whats the best most economical way to go.
EG