Sounds like it has been lightly used.

https://www.facebook.com/marketplace/item/1012689622854152

“1968 Chrysler 440 engine, 30 over New balance rotating assembly Forged pistons Rebuilt heads, double spring valves Baffled oil pan, extra capacity (rare) Milidon oil pump, pressure to block, return back to pan Cam 4400 low end, 7200 high end Holly 1350 CFM carburetor Nitrous 300 shot fogger system MSD 6 AL ignition High RPM Power steering pump 2 magna flow fuel pumps 4 wide five wheel adapters Mud hog cut tires on front 35” Bigger digger paddles rear 35” 5.89 gears on front and rear SCS gearbox (transfer case) 3 speed 727 transmission, reverse shift pattern Fiberglass jeep racing body Both engine and transmission rebuilt in 2016, only has a total of eight passes in four events, two of those were nitrous. Worked very well, asking $15,000 OBO”