Hey guys...last night I was pulling my 98 dodge 3500 which pulls every weekend...the guy that did my head work estimates the truck at around 700 hp...last weekend I broke a yoke and this weekend exploded a spider gear in the rear differential...what would be the best way to upgrade the stock rear end to handle the horsepower?...a buddy if mine has a full locking Yukon differential but many say to spool it...any ideas,comments, or suggestions are appreciated