2500 is what it cost for me to have the Trans Rebuilt a few weeks back. Amisol Fluid and a hardend 4th GEar shaft. THe 4th Gear shaft is what went in the begining. All the other parts really not that bad looking. Except a big gear he pulled out that was round and about 4" long and gooves and diagonal it looked like that was having a bit of cross threading going on. Transco shift kit was put in at the same time to. Really like that shifts so nice and firm now

Also how long between changes with the Amisol