I can weigh the difference. I have stock 4 banger seats coming out though. I'll probably do the swap in the next few weeks once the weather breaks!
Nik if i were you id just keep the 86 seats. As you've said, they are iconic! If anything id recover them in new fabric and seat cushions. Restore them if they aren't in good shape!
I mean, that may be true, but my seats aren't just "basic GT seats". they are black and grey leather seats, and look identical to the OP's seats minus the snake. So i'd assume they are close to, if not the same seat. Regardless, as you've said the visual and comfort factors will be greatly improved.
Shout out to my best bud out in the Mittin @
SVT32VDOHC for the seat hookup! I also have 99-04 rear black leathers to go in the back.