Express Performance?

[tonkatracker]

2003 Express 3500 6.0l are there any Performance mods out there for it??

I am not trying to make a rocket I understand its a 5000# van but is there anything out there to squeeze out a few ponies?

[Davandy]

Reprogramming the ECM will give you an improvement :great:

[finalday7]

wouldn't most performance parts for that size engine be interchangeable?