'66 122s/b18d t.II/2xHS6

I'd like to put a stop to the foul precipitation under the engine, and since the majority of the leaks seem to eminate from the sump / oil pan seam I thought I'd start there. Tightening the bolts has helped marginally, though I understand I'm lucky to have them all in the first place. Now I know that there is a way to remove the sump without having to remove the engine, just raise it on the mounts, but is it possible to change just the gasket without having to even raise the engine? Not to insinuate that I'm lazy or careless, but money, time, a winch and level ground are all issues in this case. I've seen it mentioned that the gasket will partially drop with the pan, but will a one-piece gasket be able to clear the oil pump? Is a sectional gasket better for this approach? By how much will it protrude into the pan? Should the gasket be glued or adhered in some manner to the pan or the block?
Also, I'm uncertain of the history of this particular vehicle, though its condition hints at malicious neglect if not abuse. To my knowledge the engine has not been rebuilt, but I'm suspicious of the presence of a blue gasket maker / sealer at the joining of anything to the block, the head excepted. Can anyone recall if this stuff was found when the engine was new, or is it more likely I'm going to find a crescent wrench and a fossilized sandwich in the pan leftover from whatever freak took it apart and resealed it with a melted tarp?
At your mercy, volvo fans, and I will accept the possible response: "Dear God... don't you touch a thing on that car unless you can do it right, as it states in the manual..."

I'm envious of you all, with cars that drive.
-Sean Custer