is it for 4ac setup ? cause mine has all twin cam pulleys and from what i heard people mostly use the 4ac pulleys on the twincam motor since they can't find the tension pulley, i have all the parts and hooked it all up and the only thing missing is tension pulley which is what i need. has there anyways around this i used the ae82 twin cam one, but it makes the compressor sit too far back hitting the engine mount.