Interesting, sub'd. Why would you need to use the LB7 valve body if you have a 6 speed vb?
If you wanted to swap a 6 into a 5 speed truck you would need to. It then will only have 5 gears. I was talking to the guy that said he had a built 6 speed he wanted to use in a older truck. If you wanted 6 gears in a 5 speed truck then you would have to use the custom vavlebody and tcm from this kit. I was just saying that all '01 to '10 allisons can be interchanged but your end result will still be a 5 speed for '01 to '05 and 6 speed '06 and up. Long story short if you want 6th gear to work in a lb7 or lly you have to run the custom conversation kits.