I have some questions on transfer cases and swapping them. I have 2 Explorers (or 1 1/2 might be more accurate). Both are 1997 XLT's, but mine is the pushrod 6 with a manual transmission, and my wife's is (was) a SOHC 6 with a slushbox, er I mean automatic. My wife's, with 210,000 miles of...