I got on craigslist and bought this A518 transmission from a 1991 Dodge ram. I looked for a 1990-1991 A518 because they did not have lockout. Also, the 727 converters can be used with the A518 and 6.1L because the forward half of the case is identical to a 727, which was the 3 speed automatic. However, the A518 has a .69 overdrive ratio. I paid all of $100 for the core A518.



I went after it with solvent and a couple wire brushes. it's not quite done in this picture, but you get the idea...