i am working on a 2wd to 4wd conversion and my first thing is to get a manual tcase and rear driveshaft. i have been looking at the atlas2 with the 3.0:1 low range, i have been considering the manual borg warner that came as oem on the explorers, i know i could prolly get the BG from a junk yard but do any of yall know how much it would cost? and with the atlas2 where can they be obtained? and how much do they cost? are there any other tcases that are worth considering? i would like to spend as little money as possible but id also like to do it right the first time. just basically looking for "bang for the buck"