The transfer case just just WPL metal unit, the motor is a 57:1 gearbox motor from servocity 170-ish rpm I believe then I pot a red cat motor on it to give it a little extra omph. When you put the motor on the servocity gear box you have to trim off some of the motor shaft then swap the gear over, I haven't been able to find a tiny pinion gear to match those in the gear box so I swap them.
The whole thing fits up in the chassis I had to sand mine down on the edges cause it was a tad to tight.
After careful measuring I still mounted the transfer case to far forward..
and had to cut away a little more frame section and move it to the rear about 1/2 an inch. If I had used "L" channel I could have just drilled two more holes
Here's another view I like the way it comes together even with my screw up
I'll get better at it....I hope...now I just have to get the fifth wheel on it...