If anyone may be interested in these donors, here's a bit more i've learned.
Turns out I used a 1965-66 only configuration Structo hydraulic dump truck. I still have no clue if it's supposed to be based on any kind of real truck, or just a generic truck.
Stock steering on the Redcat Everest / Exceede Maxstone donor is kinda bad and understeers a lot, here's the biggest part of the fix:
http://www.rccrawler.com/forum/newbi...tuning-10.html
Redrill knuckles for zero ackerman, make new draglink and tierod. Eliminates tire scrub, it's still turning a 4 locked truck, but atleast you can steer the same direction.
On the trans, up to 370 brushed motors fit, and stock esc will support them.
The differentials have a 14t pinion, 38t ring. Which is 2.714 to 1.
The motor pinion is 14t. i don't yet know the spur size, or the trans total ratio.
Any specs or dimentions that might be helpful?