did the conversion on my 68 using the stock power steering pump, everything went realy smooth with no problems. All i have to say is the cars power steering is pretty stiff now, but nothing like non power steering. i havent gotten the real test.. THE FREEWAY... but the steering is very reponsive and feels great (just a little stiff) but this is what i wanted. when the car is off and u play with the steering wheel u can feel how much the slop is gone.. I should be taking it on the freeway this week sometime, and i will get back to ya... great investment for 700 bucks..