jason i used the rock auto pulley . it is working fine. added i also sent another rock auto pulley to mike to machine down and the bearing lasted about 5 minutes! no fault of mike just a bad pulley. the pullies are identical but either m/b or rock auto they both need to be built better
dont forget shipping for the rock auto pulley. raises the cost to about 30$

mike the tensioner pulley ( the metal one) can be had at autohauz for about 50$ and is an easy swap. no need to get a new tensioner