Okay Mud I've been doing research on this subject for a while and would like some input. I have an A340H tranny in my truck and I want to gain more power/MPG/other options by loosing the T-case it has. I have two options Inch Worms adapter or just swapping in an A340F tranny. The Adapter is $550 and the tranny alone will cost $700 to have it put in plus whatever the tranny costs But if I have the adapter installed I have to pay to have my tranny torn down rebuild and it installed. So what do you guys think would be the best option to choose from? And I do wanna keep this an auto even though my plans are to turn it into a rock crawler.