Got Mk3 Toyota MR2 Seats in mine, cloth in black, so much more comfortable and look great too, Runners need a slight modification but all that is, chopping ends off as they're a tad too long. Still work fine!
Ive got Magnum bucket seats in mine on the original runners. They are very comfy even on long trips and keep you in place in any situation. we also have and use the front middle seat
Have you got any more photos of around your transmission tunnel area (the gear stick base in particular)? I want to scrap the rubber around mine because it's all splitting away and yours looks quite neat just as painted aly.