Both my rear calipers are leaking from a 13 year old SSBC kit. I would like to rebuild them but SSBC says they do not sell a kit - that I would need to take them off and send them back to the factory for rebuilding ($300 for the pair) with a week turnaround + shipping both ways. These days that means close to a month. This is super inconvenient and I would love to just buy a kit. I have to think that they were using parts that were generally available and modifying them and that there might be a compatible rebuild kit out there. If you have any suggestions here, I would be really grateful. Thanks!

Strategy info in here that may help you? Numerous brake kits out there use calipers and rotors from other vehicles so if you can figure that part out getting the service parts is easier.

https://www.camaros.net/threads/help-find-rebuild-kit-for-ssbc-dual-calipers.467977/

Are they still in business?
I thought they closed up some time ago

"SSBC-USA, established in 2019 after purchasing the SSBC brand from the now defunct Stainless Steel Brake Corp. and starting up completely new operations in a brand new facility, is a premier performance brake systems and components manufacturer out of Elma, NY. We offer complete drum-to-disc brake conversion kits, caliper upgrade kits and our massive direct-fit 8-piston heavy duty truck billet aluminum calipers.

Priding ourselves on American Made goods, we fabricate our products in our facility, and partner with other local/national manufactures as necessary to support your needs as our customer. Whether it is for your classic American car, heavy duty American truck, or the cult favorite Jeep, we have solutions to upgrade, refinish and otherwise completely “American-ize” your ride!

Have original SSBC calipers? We can restore those too! Check out our Caliper Restore services to breathe new life into those old brakes.

Welcome to SSBC-USA."

Thanks for the update

look closely at 87 thunderbird turbo coupe rear calipers.
a few weeks back, i was gifted info on the ssbc rear disc brake kit so i could copy the bracketry their kits contain.
in the info, it was stated the calipers used were thunderbird turbo coupe items.
although i have not held them in my hands, i did a quick rock auto search, and it appears the calipers for the 87 very closely match the pics i was sent.
trying to "pay it forward", check the caliper or rebuild kit for it, and report back one way or the other.

Good clue, thanks will do.