Great project again! My mom had an 87 D50 Ram 4x4 that we used to ride around in all the time until she got hit by a semi. That wasn't cool, the semi won for sure. Any how, there is a guy on Competitiondiesel.com that put a pretty sweet 12v 5.9 cummins in one of these, kept it a 4x4 and races it and mud races it. It's pretty sweet. Anyhow, back to your build... Do you plan to make the trans tunnel removable to allow easier trans removal later? Nice work on it too.

I'm guessing dupont's patent ran out on the r-134a just like it did with R-12 and then was outlawed. But they already had the magical r134-a ready to take it's place.