rodknock77

i bought a light duty 91 f250 4x4 3 years a go its been sitting in my driveway the problem is it seems to not have 1st or 2nd gear when driving normal but in the dirt if you stomp on the gas it has no problems spinning the tires what should i look for on the wires to the trans.what about a c6 swap the truck only has 65k on it.