I have a 2000 dodge 2500 looking to put in a super chip but not sure which one. I have seen a 3705,3805,3855. Can any one tell me the difference in these and which one I should use for my truck. My dad is using a 3705 for his 98.5 cummins. So I thought I would have the same guess not.

 

Usually the high number units have more options if I'm not mistaken.