heres the deal: im surfing craigslist like i always do and come across a guy selling toyota calipers for $50 (for both). i think "sweet, great deal". email him and ask to make sure they were the calipers that were direct bolt on with no spacers required. he says they are. i just happened to have a buddy up by where the guy lived at the time and he said he would pick them up for me. i get home and look at it and thought it looked like the vented rotor calipers. check the stamping and sure enough "S13WB" right on the side. so instead of a $50+ 4 piston upgrade, im looking at $300+ for upgrading the rotors and getting a spacer and a master cylinder. partly my fault for not doing it myself, but i HATE being lied to. and although its not terribly expensive, i hadn't planned on spending that much. here's where im stuck: do i cough up the extra dough and do a big ass upgrade (which would postpone my suspension upgrade for a LONG time) or do i try and sell/trade for the proper S12's for the direct swap?