I did the conversion a year ago with the kit from Slee.
I am very happy I did for a few reasons.
+1-2 MPG all around. Larger increase on highway. Probably the only mod that can legitimatly pay for itself.
Much smoother. I have about 5" of lift. The only way to get front driveline vibe gone without an expensive CV shaft is to cut n turn the front axle and I don't have time for that.
I can run different size tires if necessary.
I tow with my 80 regularly, and the power difference between AWD and RWD is noticable.
I would definatly do it again. The only inconvenience is having to lock hubs for 4wd. Not really a big deal in the scheme of things.
Do you have any part numbers or should I just contact Chirsto?
This has been on my list for so long...