Actually the 2500 series gm uses a corporate 14bolt. Not a d60. And yes I can say the tow max comes with a 14 bolt. A coworker has an 05 gmc 1500hd we researched till blue in the face to determine the difference in it and the 2500. The rear frame rails are slightly differnt. Other than that they share engine, trans, tcase, front and rear differential. The regular 1500 gm trucks that have the 6.2 max engine are 6 lug. The tow max I have seen have been 8 lug.

^^ I learn something everyday. too bad I can't remember it

I tow my 38 Top Gun with a Raptor...no issues. Tows fantastic. Tow several hours. Key is electric over hydraulic brakes on the trailer. The towing technology on the truck in tow mode is spot on. Plus stock tranny cooler never overheats. Anyone that tells you different has no idea what they're talking about and probably haven't ridden in one...I almost switched to a F250 or F350 and would have regretted it....especially the times that I am not towing the boat. Good luck!!!

+1 to the above. Like I said in the beginning of this thread. My friend dave snatched his loaded enclosed trailer all over the south east with his raptor.

Wow.