My dad came by this past week via a road trip from Texas (1600 miles) and he dropped off a 99 GM NV4500 for my truck. It uses a hydraulic clutch and my 54 SM420 has a mechanical. Has anyone been successful at adapting their original clutch pedal/bracket to accept a hydraulic clutch or do I need to rip out the old and install something else (which I'd rather not do). Thanks!