42RH / A-500 in a Duster with pictures.

interesting thread, I hope that if your using a 3.9 transmission behind a 360 that your going to build it for intended use, the 3.9 tranmission is built with lighter duty clutches and gears and bearly servives life behind a mild 3.9

also I have heard that the OD can fail from lack of fluid if your intended use is mostly 1/4 mile

These subjects are not the focus of this thread, I'm trying to keep it simple as possible. Upgrades to the 42RH are not going to be covered here but in another detailed thread. People run hemi's with 904's, a 42RH with minor mods will have no problem behind a 5.9