Back when my 58 was my primary means of transportation, I noticed that alot of the repro parts I was using to keep it on the road weren't holding up to everyday use. I've worn out a couple of drag links, gone through two or three sets of front wheel bearings, and the tie rod ends have been replaced at least twice that I can think of. I guess most of the parts are just supposed to hold up well enough for the once-in-a-while sunday drive, or the trip to the car show. I will say that over the past few years the quality of the parts available seems to be a little better. Either that, or I've gotten better at sniffing them out.