I definitely know that the front seats are interchangable. I dont think the rear ones are, but try it before you spend your money. I might have a set of 1990s seat by the spring (as well as other parts). I am currently driving my second 89 special edition and I love those seats because the special edition came with a nicer stitch pattern than the SR5 trucks came with, which have a dull gray pattern. I can definitely tell you that the headrests are not interchangable from 1st gen to 2nd gen. Im in Toronto so message me if you need parts at 416-882-4797. Nice truck by the way, I found an 88 from california and Im gonna strip down the SE and make an SE/SR5 hybrid with the parts and paint it silver and grey. Itll look like your, with a 2 inch body lift and 31 inch tires on one inch wider than stock white rally wheels (and maybe one day, 4 inch suspenson lift, with 35s and bushwacker fender flares!)