hello. I have a 1995 F-150, reg. cab., short bed. Irecently bought a driveshaft that came off a 1992. The one I bought, I noticed, has only one u-joint while the one on my truck has 2. Are these interchangable, does anyone know? Oh, also have off road package, if that matters, but the furthest off road I get is farm roads. Thanks. --Jim