I need to change my harmonic damper b/c it's wobbly, so I figured while I had that stuff off I might as well swap in a new timing chair and gears I'm at it, and change the front seal. How much is involved in doing all of this? Would it be a good time to change the entire oil pan gasket? I think my rear main is leaking also. I just replaced my clutch about a year and a half ago and replaced the rear main also, but I think it's leaking again. So I'm going to drop the tranny and replace that again also. Should I go ahead and replace the oil pan gasket also? I have heard you have to jack up the motor or pull the motor to do so. I'm not sure if the pan gasket is leaking or not. But I have 163k on the engine. I'm more concerned about the front than the rear right now, since I have done that before, time consuming but fairly easy. Any help will be appreciated. Any tips you can give would be great!