I will check what I have on hand on these when I go to my workshop tomorrow. I do know that the ones I have will be just as they came off of the 88's I have parted out and are as is although they can all be rebuilt or used as cores. Thank you.
O'Reilly's is hit-or-miss depending on if cores are out there to be rebuilt, but another option. I snagged a set from them with a lifetime warranty and had one fail within a year; due to cores being unobtainable, the store covered the cost of having a local brake shop rebuild it again.
If the vehicle is an automatic, you could also install front calipers on the rear and eliminate the parking brake.
[This message has been edited by jonrev (edited 08-11-2020).]
Just so you know, they seem to have gone out of biz. I tried to get my core charge returned and have not received any response.
Newsflash -- they are still in business and I have received my core charge. Mark was very helpful in tracking down what happened. Just setting the record straight on this business that rebuilds the 88 calipers.
Not sure if you found the 88 rear calipers that you needed, however I just picked up an 88 Formula and I will be parting it out over the next two weeks. So if you are still in need of them please contact me at LHUBBERT2@BRIGHTHOUSE.COM . Thanks.
Send your current calipers to get rebuilt by Phoenix Caliper. Give him a call and let him know you're sending them over. Both of the rear calipers fit snugly in a medium sized USPS flat rate shipping box; bag them up in a few garbage bags so they don't leak all over the place during shipment. I just had my 88 rears rebuilt by him a few weeks ago and he did a fantastic job and they are working flawlessly. He's a nice guy too, he runs a good professional business. The price was ~200$ for both of mine to get rebuilt.