I like the mystery machine..
I'm saving my spare TOY driveline stuff to do the same thing in a Flattie, although it will be only 34s, and leafs all around. Goal is capable summer driver/wheeler under 2500 lbs, and keep as close to stock look as possible.
Piecing the propane setup together yourself or going with Got Propane? or one of the other vendors?
Keep us posted!
I've considered 'pane for my Toyota, as well.