I bought a non lockup a518 46rh auto transmission from a 1991 Ram 150 (was behind a 318) that will be mated to a late model 6.1L hemi with about 475hp. From searching, the Sonnax "Sure Cure" a518 rebuild kit is a rebuild kit that also addresses some common design issues of the transmission. Cost of the kit is $112 plus shipping. Ill also be using a forward manual valve body.

Are there any other kits that are better or that you would recommend? Also, what other parts should I consider ordering for the A518 rebuild? Thanks in advance

Should I send the torque converter to be modified or should I just buy another converter altogether?