the first alt i pulled was from an 00 F150 with the 4.2L 6cyl. The alt put out 147 amps at 14.4 volts, which was great, but the pulley wouldnt work for me since my OBA is on that side and runs off the alt.

the 3g pulley is 15/16 diam and the stock ford (aka Kilby alt) is just over 1"1/4"