arg another problem i found while working on o2 sensors well when i was taking off the o2 sensors because of the last thread i put up. i was looking and saw a slightly big oil leak on the rear main seal of the engine. so my question is to get to the rear main seal i have to pull drive shaft, tranny, clutch and flywheel, im stuck there. when i had my old 84 and i replaced the tranny i had a shop do it and he replaced the rear main seal on that engine too. but also when i remove the clutch and flywheel do i have to send the flywheel to get resurfaced? or is there something i can do like sand off the flywheel?