It is a lock up, and it is the only thing I have bought for it so far.
It has a billet face for the lock up clutch to ride on, and the clutch is carbon fiber and supposed to be better material than the OEM stuff.
Also supposed to be about 400 rpm lower stall than the standard 5.9 gas converter. Figure it will stall about the same rpm as the stock converter behind a 440.
Tried to find one with multiple clutches for 518 but found no such animal. This is the only one I found with a billet steel face to prevent distortion from heat. Also have to pay attention not to overtorque converter bolts and distort that way.
