I'm running BBK shorty headers and a Pypes x-pipe. I have cats and i like the pypes cuz it tucks them up front so you have more ground clearance but you can still easily get the bolts that connect the headers and x-pipe. Both are made really well, i would definately recomend both. My dad has the offroad x-pipe on his 85 like you want and its made with the same quality. Everyone is different so i would say look around and see what you like best.
I have MAC shorty headers and a MAC offroad H on mine... I love the sound, and my car came that way. Personally if I would do anything different Id do long tubes, but I love the sound of the H pipe with my MAC catback.