[get me on the road]

ChevyTech or anyone keeping up on this thread, I cant get the sender loose, but the pipe that its sticking out of is loose, so before I take my air hack saw and cut enough off the sender to be able to spin that pipe out (and get the rest of the sender out once I get the pipe out) do you have any suggestions? I sprayed the sender threads with penetrating oil so maybe that will help. Also should I use thread tape on that pipe where it goes into the block?