The way I see it... Is I'd get the Saturn alt(just stocker unless your running a mess of amps). And swap it as soon as I have down time with the car. Then If the Alt dies, I can swap really quickly with out having to deal it grinding and fitting .

11.45@125,
stock bottom end 6bolt 2g head.
272 hks cams.
Holset hx35
Backyard biult!!