Well, hoping to draw on the knowledge out there... I have a 55 Country Sedan wagon w/ 272 and after finally getting it running it appears I have a rear main seal leak. The engine is rebuilt, however its been sitting for 20 years... long story. Just wondering if anyone knows if I can do this seal change with the engine sitting in the car. Saw somewhere that if #1 is on TDC the pan will come out, not much room at crossmember. Front sump pan. Would be obliged for any experiences out there....Thanks,