toasting that many alternators is a sign of wiring problems somewhere. Are the wires heavily corroded? what is the condition of the grounds? Do you have some sort of draw overworking the alternator like an amp and sub, or using a crazy amount of lights or something? Something is definitely overworking the alternator... it's possible the computer is having the alt locked on full open, but that would probably fry any battery after a single 30 min drive or two. Only other thing that comes to mind is belt related but you'd probably have killed everything else and destroyed dozens of belts if it was tightened down that much.
1995 ZJ ltd, 4.0 i6, *cough stock cough* 253,xxx and still pumping strong
1998 Chevy Cheyenne K1500, 5.7L Vortec, mostly stock
*In peace, sons bury their fathers. In war, fathers bury their sons. - Herodotus
[QUOTE=JasonStebbins]We can call it the Whoosh King Catalog System. :D[/QUOTE]