ask around localy and find a good shop to get it rebult.
find one with a good rep. i had mine done in jan. and i thought i had to take it back as it turned out my gauge AND my multimeter started reading 19.5 volts at the same time /forums/images/graemlins/doah.gif (what are the friggen chances??????)
anyway i took it to them and they were beond helpfull checked it out on there lunch help me reinstallit made sure i got it in and retested everything in the truck.
on prices its way beter. local store price for my alt 325$, one he had ready: 250$, he rebuilt mine with 35 extra amps told me 179 + tax
the next morning it was ready and gave it to me for 170 tax in! /forums/images/graemlins/waytogo.gif