Just got off the phone with Pacesetter.
They said they don't have a "specific product" for the 2500 hd series, however he had a customer call in and said they worked fine. All he needed to do was re-route a plug wire or two.
My last question is this. Do you need to gasket these? I have a 4.0 ford ranger that I changed the motor in a few years back and noticed that the manifolds had no gasket between them and the heads.

 

^^^ you need to use the search sometimes !

Pacesetters come with gaskets . . . and they suck. They'll crack, dry rott and fall appart over time.

REUSE your stock gaskets and never worry about them again.

 

THANKS,
I use the search function all the time. Its very helpful most of the time. I didn't feel like searching for that since we were on the topic of headers anyways.