Here's an afternoon project from many years ago...
I took 2x Losi XX chassis and cut one near the back of the battery tray area and cut the other near the front.
I then glued both long pieces together and both short pieces together. I made a cheesy drag car with the long chassis (will show it later) and made this with the short chassis.
There are parts from
1) Original RC10 (front wheels, tires, steering knuckles, front axles, modified (vertical stud) steering hub)
2) Losi XXT or XX (chassis, tranny, steering rack, rear body mount (is an XXT front body mount))
3) Losi Rally Weapon (shocks, front arms, rear axles/swingshafts)
4) Losi JRX Pro SE (rear hubs)
5) Associated RC10 DS (rear arms, rear shock tower)
6) Hand made front shock tower
7) RC10 B2 or B3 (body)
I've run it on round cells and lipos. It actually runs quite a bit better with 5 NiMh cells because they are heavier. Although I put a 3s lipo in it and it was nuclear. The 19 turn Trinity Speed Gems motor is a decent match. Have also run it with modern tires on hardpack track and it was not competitive at all. As you would expect. But fun-wise it is tops. Sorry for the crazy terrible paint job. Came with one of my eleventy thousand eBay wins.
EDIT:
Looks like I ran it on 6 cells. Just found this pic. Had a low turn Reedy big comm motor in it. I LOVED those motors.