[uncle duke]

Hi all ,was just about to order the KN-153 oil filter as usual when i happen to see there is a Hi Flo-153RC which is the 'racing' oil filter as opposed to the bog standard 153 .I see that the RC has the hex head like the KN (and i do believe HiFlo make the KN ones as well) anyone used an RC yet ?? & any advantages over the KN ??
cheers
roger