I have a bully dog triple dog will fit 01-07 duramax, 03-07 cummins, 99-03 7.3, 03-07 6.0 $300.00 or best offer. ANd i also have a hypertech max energy for 98.5-02 dodge cummins.$300.00 or obo for it to. Both work perfect. Hypertech not old at all an does great with mpg.