Not sure about your area, but aren't the Autozone pumps all lifetime warranty? Around here, Autozone, O'reilly's, Advance Auto and Napa only offer a lifetime warranty remanufactured (most of which are A-1 Cardone) pump.
The more I find out about this, the more I believe the autozone is the way to go. (with the life time warranty)
My GM dealer cannot get the pump, says GM part # DISCONTINED. Maybe he didn't look under AC-delco.
But considering there are no new parts, and no new pumps, every rebuilder is using 20 year old parts. So every shaft, including mine that snapped in 1/2, has 10 zillion miles on it.
Even if I send out a rebuilt pump to a profesional, like TURN ONE. He says there's not much he can do with it. So why buy AC delco with a 1 year warranty, when autozone is a lifer ......
I went thru 3 cardone lifetime pumps from o'reallys since summer of last year, one lasted half a year and the other two noisy out of the box.
I picked up a delco pump off of amazon this spring and its been quiet so far.
evil T-47 seatbelt bolts and cutdown ZQ8 bumpstops, Kore3 front brakes, TB bypass, Dynotech DS, F-body EGR, Meziere WP, Comp Cams 1.6RR/CM springs, trans by Moi Industries, Yank 3600, Earls trans cooler/rad cooler delete/Derale t-stat, RAISS, SLP headers, SLP injectors, pypes X-pipe/magnaflows, Borgeson shaft, Hotchkis springs, PPM front stuff, Metco rear arms, Clear Image DS loop/trans crossmember, 3.73s, eaton posi, Hypertech for smog BH tuned PCM
Anyone who has ever replaced the PS pump before knows it can be a pita, undo the hoses, remove and press on the pulley, etc. Based on that and regardless of warranty length, I would opt for the AC Delco unit.
Just not a job I would want to do again in a year or so. Here is a link to one at Rockauto for a good price. The dura last unit a AZ is only $10 cheaper.
'95Caprice SS conversion - Bonny Buckets - 96 Column, Shifter and Console - 3.73 Gear and Herter tune - Z/28 Cluster - Blazer OH Console - Green/Pink bushings - Chromed Impala Wheels - Eibach Springs and Bilstein Shocks - Corvette Engine Dress - the list goes on and still more to do...it never ends.