man how many zip ties did you use on that caliper? haha. but the thread is m12x1.25. it is a really hard to find thread so you might have to go to a specialty store to get it. or you could just go to your local dealer. if you can get one from the junkyard that would be your best bet. just put some pb blaster on it before you take it off. i dont think its that common for those to break anyway so you should be good.

87 22R PU, 2? body lift, 33? BFG muds, 4.88's, F&R Lock-Rights, Rancho Shocks, EB's Street RV Head w/ 268 Cam, LCE Header, 2" to 2 1/4" exhaust, Flowmaster 50 series, Magnaflow high flow cat, complete Herculined SR5 interior, V6 BB, MC, and calipers.