The difference detween the two Transgo kits are - one is designed for do-it-yourselfers and has all of the gaskets necessary for the install. The other one is designed for trans shops who have the gaskets in stock.
I got this information directly from Transgo tech support over the phone and posted it in another thread a few weeks ago.

 

That's probably why you don't like the shifts. I had complained to the shop manager at my local dealership when I was having warranty work done that the shifting was slow and not snappy enough. He asked me if more than one person drove my truck, when I told him I'd recently gotten it from my grandfather he said to reset the computer by leaving the battery unplugged.

His explanation was that the computer attempts to make a shifting profile that is suited to the driver and how they drive the truck, go easy on it and it tries for easy, smooth shifts. Drive it like a maniac and it should try to shift for power. He said if two people regularly drive the truck it gets confused and tries to make a program that suits both people but if they have different driving styles you end up with shift patterns that are a compromise at best or just plain hated by both at worst.

 

OK, that is the third response I have heard regarding the differences. I have seen the contents of both kits and neither come with any pan gaskets, that is the only gasket you may need. I think the transgo Tech's don't have their **** together!


Here is picture of one kit, I don't have a picture of the -HD2 kit but it does not have gaskets either.
LB

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