ive had one on my hemi since 2003 makes alittle noise i can hear it at cruise inside my car sounds like a vacuum leak i got mine brand new for 380.00 so i bought it u need it on a hemi or a belt drive last barton ss hemi i saw still had one on it mopar muscle or action did some dyno testing i think the gear drive made the most hp and kept the cam timming dead on !! my mopar 2002 block needed grinding to clearance the idler !!!
606 hemi pump gas best 9.60 at 142mph on motor 05 hemi daytona 1500 go-mango 4wd quadcab 2007 hotrod mag pump gas drags runner up, roadkill nights dodge big tire winner 2018 2019 back to back
i got mine brand new for 380.00 so i bought it u need it on a hemi or a belt drive last barton ss hemi i saw still had one on it mopar muscle or action did some dyno testing i think the gear drive made the most hp and kept the cam timming dead on !! 
my mopar 2002 block needed grinding to clearance the idler !!!
