I got two samis, one welded and one with a locker. I never was a fan of welding. My second sami was on a budget so I welded it just to save $170. Being cheap actually paid off for once, I like it alot more then the locker, the only downfall is some chirping turning into parking spaces, normal driving there is no indication its back there (unlike a locker). If welded correctly it will hold up fine. As far as not being able to go back to stock, IF you ever decide to, take about $50-$75 of the $170 you saved from not buying a locker and buy a stock third member and sell the welded third to someone who dosent weld for $75-$100. Thats my opinion though, weld the rear and throw the locker in the front