[projectRDM]

Salvage yards have much better pricing, and rebuild kits are easy to get. For about $150 you can get all four calipers and pay the $8 or so for kits, that way you can paint/powdercoat while they're apart. If you must buy new, you can find unloaded calipers for as low as $70 each, loaded for maybe $100, but they come with cheap pads and all the anti-rattle hardware which is useless.
And for the record, it's a completely dick move to turn Schassis calipers in as cores, that's why the prices go up or calipers are out of stock because most rebuilders are sitting on a pile of 240 calipers and can't get the Z32 calipers to send out. Typical 240 owners being lowball, cheap bastards.