i had the same problem with my 70 351C with the supposed concours correct hoses, the power steering belt ended up rubbing a notch into the lower hose. Since you can only buy them as a set, i didnt want to buy and extra upper hose for the heck of it, so i went to carquest and just got a gates replacement. The gates was longer then the concours one and enabled you to trim it to get the perfect fit. Now i have no kinks or rubbing...go figure