and actually i was looking at the wrong one 289 w/o shipping I apologize for not replying in our section, but I saw this first.. We've been absolutely hammered busy this week.. There is so much wrong in what he said I can't even comprehend it... Max output at 1200? Really? FYI, 1200* 3.5 is 4200 alt RPMs, uh-huh, suuuuure.. Prove it! Think logically about it, a stock small case CS130D, 220 amps hot? That's at least 275-280 cold which happens to be just shy of 300% more output than stock? Not happening, not ever. Let me translate what he really means, 210 amps max, cold, and 30 or so amps at idle on a good day.. Im not singling PB out here, it's ANY and ALL manufacturers that think 100 amp small case Delco alternators are good for 220+ amps and claim their cooling is "great". Just dont do it, especially when there are better, cheaper options... Just a direct comparison, we have a straight 200 amp CS/AD hybrid large case that will do 130 at idle hot, all day every day that is only $269 and is a direct bolt on, a 230/140 idle that is $329, and we can do a 250 that will do 140-150 at idle for $389.. ^^ Here is your solution for an alt. Good specs, comparable price and Great company to boot!!