This is a 2wd Sand Rail. I suspect the body is fiberglass. Looks well built.
“This is a two wheel drive, sand drag,off road dune jeep. Here is a partial list of features it has: a Narrowed 9 inch Posi Rear; Turbo 350 rebuilt transmission with a 3500 stall converter; 4 bolt main 400 HP Chevy 350 with Vortec angle plug heads; big hydraulic cam; 850 Holley double pumper carb; MSD ignition; 200 HP Edelbrock NO2 system. The Jeep has been lengthened about 10 inches in the front.”