1977 Ford F-100 Base Cab & Chassis 2-Door 4.9L

I am selling my beloved f100 and all the parts I have collected with it. Most of the parts minus the body and frame are new or have been replaced. There is either something wrong with the transmission or the rear axle. I am moving and don't have time to fix it. The truck will move under its own power but there is a grinding sound. It will need to be trailered home. Here is a list and description of each part as best to my knowledge:
Engine is 4.9 pulled from an 1996 f150. Used original intake but exhaust manifolds were replaced with Heddman header and y pipe. Transmission is ZF S5-47 from 1995 f250 and was rebuilt by Aamco a year and a half ago and has custom driveline.New steering box and power steering pump.New fuel pump, as tank and filters.New Optima battery.New brake calipers, heel cylinders, aster cylinder, nd booster.Also comes with spare rear axle, ash board, c system, uel injection manifolds, ylinder head with chrome valve cover, lternator, arb, nd power steering pump.