Hi Dusty and welcome to the forum! I'm happy to hear you are considering a Heartland RV, I've seen the Bighorns first-hand - nice rigs!
All the Bighorn details can be found on the factory website at this
link.
I have attached as an image, the specifications for all current Bighorn floor plans as of 02-21-05.
Other users will be able to better help you in determining if your 2002 F-250 SRW Diesel will tow a Bighorn. Please reply back with answers to these questions:
1. What Bighorn floor plan you are most interested in?
2. From a sticker most likley on the drivers-side door post of your truck, what is the GVWR?
3. What is the current weight of your truck?
Best of luck.
Forum Members: Please chime in.
Jim