arg another problem i found while workig on o2 sensors

Since your gona have the flywheel off anyways i would have it resufaced.

yep, get it resurfaced while it's off. do you really wanna do it later?

"so my question is to get to the rear main seal i have to pull drive shaft, tranny, clutch and flywheel, im stuck there."

At this point, all you have to do is pop out the old seal with a screwdriver, lube up the new seal, and install. Dont use the screwdriver to install the new seal, you'll damage it.

Also, betore installing the new seal, look at the crankshaft seal surface. Sometimes the old seal will have worn a groove into the crank. If this has happened to yours, just push the new seal in a little deeper so the lip is sitting on a fresh part of the crank.

The flywheel should be resurfaced if you're replacing the clutch; if you're putting the old one back in, there's no need to resurface the flywheel.

BTW - before you go crazy with the rear main seal, you might check your pcv system. One of the most common causes of leaks is a pcv system that's not venting crankcase pressure properly. The pressure builds up and forces oil out of the weakest link - often the rear and front crank seals. Crankcase pressure can push oil out of perfectly good, brand new seals. Would be a major bummer to replace the rear main and find it still leaks cause your pcv valve or the oil trap/screen below it is simply clogged up. For less than $20 you can replace the pcv valve, the hose connecting it to the manifold, the rubber grommet and the screen. I'd at least take a look at that stuff before I dived into a rear main replacement -- unless of course you need a new clutch anyway.