"I thought about that, welding a pipe to the oil pan and then connecting to the drain tube with some neoprene hose and clamps."

That would work.

"So the only difference on the bottom end is the deeper dished pistons? The crank, rods, and oil pump are the same?"

Yes. Some say there is s heavy duty oil pump available, but the turbo and NA engines use the same bearings and have the same clearances and have the same oil pressure spec.

"I always thought the crank had a longer stroke on the non-turbo, but that could have been an urban legend."

The crank is the same.

"By the way are you any relation to the late Jimmy Sargent of Pensacola, FL.?"

Probably not. Although I live on the west coast of the US, my dad was from Virginia/West Virginia/Tennessee area. I have never met any of my Sargent relatives nor do I know where any of them live.
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john