I'VE HAD THE COMPLETE transmission REBUILD WITH THE DUNRITE TRIPLE LOCK CONVERTER AND AM REALLY HAPPY WITH IT. I TOOK OUT ANOTHER (WHAT THEY CALLED DOUBLE LOCK) CONVERTER THAT WAS TERRIBLY OUT OF BALANCE AND USED IT AS A CORE WHEN I INSTALLED THE DUNRITE CONVERTER. DUNRITE, I BELIEVE, HAS THE BEST WARRANTY ON THEIR PARTS. MY transmission IS 3 YRS. OR 100k MILES AND THE CONVERTER IS LIFETIME WARRANTY. I'M NOT SURE IF THATS ON THE CONVERTER OR MY LIFE? BOUGHT MINE FROM "SOURCE AUTOMOTIVE" IN PORTLAND OREGON AND AM REALLY HAPPY WITH THE SERVICE AND RIP STANDS BEHIND EVERYTHING HE SELLS. THIS CONVERTER LOCKS UP SO TIGHT IT WILL STALL THE ENGINE IF YOU DON'T UNLOCK IT BEFORE COMING TO A STOP. SO FAR 15000 MILES I LIKE THE transmission AND CONVERTER. BEND, OREGON. 98. 5 3/4 TON LB 100K MILES