Ok, I just did the 3G alternator upgrade along with a smog delete and installed an underdrive crank pulley on my 5.0. In addition, I swapped pulleys with my stock alternater (50mm) Vs the 3Gs (60mm). My chart shows an 84.5" belt (which I just tried) and it's a bit too long. I don't feel like running back and forth to the parts store chasing belts down and reinstalling them. Would anyone know the exact size with my underdrive pulleys and smog delete ?