just wanted those to know that as far as i can tell all the parts for our nv4500 were now coming from china and india after new venture (oem) stoped producing them. quad 4x4 won't even sell parts for these anymore because they are junk, but as of this week i think i have found a company selling the quality oem parts. actually they may be better these are cryo treated (some kind of -300 freeze and then 300 heat process) and i will be able to let all know what i think of them soon. after going through 3 complete rebuilds in less than 5000 miles i was fed up. midwest trans out of minnisota has aquired the blue prints from new venture and our now making parts and selling gear boxes. i talked with scott one of the owners and i have alot of faith that these will hold up. by the way this is the same company the 3 failed units came from and they know that the china parts weren't working so they decided to fix that problem. also wanted to let you know that they stand behind there products because the 3 that i went through they warrentied and are sending me a new designed one with no more costs and some oem oil to go in her freight included both ways. hopfully this one will hold up to my hp/tq and 18k toyhauler. sorry for the long post but hope this helps out those with recent nv4500 problems.