Info on seats please?

[loblazer]

I have 1990 seats in my 80 Blazer. I think I want to go back a few years?
Can anybody tell me, was it 88 or 89 or ?? when they changed the seats.
Mine are like a grey velvet and the ones I am looking for have a ribbed or herringbone look.
Also, my rear seat has only centre belts, the outside ones come from the roof. I need a back seat that has 3 belts attached.

Thanks, Doug