[longhorn70gmc]

YES, Longhorns both GMC and Chevy have a extra six inches of bed to make it a 8 1/2 feet long bed.
Not to undo anybody but my GMC Longhorn has Custom Camper on both doors and my glove box sticker reflects the option.
The Longhorn badges were in different spots for 1968. Correct me if I am wrong, They were mounted on the Chevy's above the rear side bed, red lamps. 1969-72 the badges were mounted on the rear sides bed in front of the side red markers. My Sierra Grande badges mount just like the 69-72 badges.
Andy will tell ya that allot of GMC information was lost by GM and allot of things are not known for sure, but Andy will tell you what he can and you can reference his Longhorn web sight that is in his postings all over this websight. I hope this helps you some. Andy educated me on my truck. Enjoy the Longhorn.