My 4 speed 1969 GTS Dart has a hydraulic clutch conversion kit that the former owner put in it, it has a hydraulic throw out bearing mounted on the input shaft as far as I can tell. I think he bought the kit from Keisler, it was expensive, near $500.00 I think several years back He is dead now so I can't ask him. Call Kiesler or E mail them and see if they still offer it, it is very small and compact and it works okay I haven't mess with it yet, I'm getting ready to swapped the two piece scatter sheild out for a stock bellhousing and put the stock mechanical clutch linkgae back in it The car is a real 383 H code 4 speed car so it is worth putting all the stock stuff back on it that I can There getting worth more and more every day