I admit to total zero experience and knowledge when it comes to power steering for the tri-fives. I am aware of the original generator/PS unit enough to recognize such when I see it but have no experience with that style. At some point I would like to add power steering to my 57 which has an older '64 283 block and no accessory mounting holes on the heads. I am running '70s era Appliance headers and that seems to be an issue over the standard exhaust manifolds. Then with the various options out there it seems to be a real maze to navigate. 605, CCP, rack and pinion, probably more options that I am not familiar with. Would really like to hear from the '' been there, done that'' crowd as to which would be my best option. Looking more for a quality unit, drive-ability and fit over price