A-518 and 46RH find

A518 and 46RH are basically exactly the same. 518 is hydraulically commanded. RH, the H stands for Hydraulic. Guess what? Hydraulically controlled. All of these feature lock up convertors. As Valiant said, 96 ish they went RE. E is Electronically controlled. If they are 2WD, snag em!!! Hard to find! Even if they're 4WD, still have value.