I have them on my speedster, they work fine. I prefer hydraulics for my full-fendered cars as I suspect they will last longer??? I'm putting '34 shocks on my tudor now, they bolt right on but are thicker so move more fluid resulting in stiffer action. (I hope?) I know Dennis puts quite a few miles on his, so maybe fricton shocks are more reliable than I thought? They were common on race cars because of light weight and adjustability.