Ford made the twin I-beam front end with the idea that it would never need to be aligned once set from the factory. Ford stopped making the twin I-beam because they could never get it into alignment. If you must change the front end, try looking into a front clip out of a newer truck. You can put upto a '91 front clip in a '73-91 GM as a direct bolt in, I'm not sure about Fords though. The other, cheaper, solution is to slow down... It will save you money on gas, tires, and engines.