Has anyone installed a superlift truspeed on a '06 2500 HD D/A? I bought one and the instructions say up to '03 but on superlifts site its says they go up to '05. Would there be any difference between the years? Any advice or help is appreciated.

Anyone?

Last time I asked my parts shop they called Superlift and their customer service rep hung-up on him after they stearnly said it will be done when it is done.

I say go with the Superchip. It corrects the spedo and you get back some of the awesome perfomance you lost when going to taller tires.