1993 Dakota 2 wheel drive, with the 3.9 V6.

Can the oil pan gasket be replaced without pulling the engine?

Bonus question; how hard is it to replace the rear main seal too?

I'm pretty certain a majority of the leak(ing) is from the gasket because it didn't leak until I messed with the pan back when I replaced the timing chain.

While I don't mind the rust proofing aspect of it leaking, the stench of it leaking on hot exhaust is getting annoying.

I would consult my service manual, but it's packed away right now, so I'm asking here instead.

Thanks!