The seats in my 87 brat are very bad and I was wondering if xt seats would bolt in? I also notice mazda maita seats look very close to the right size. anyone looked in to that?

Good questions--I am interested too. Especially if leather Miata seats would work, that would be cool!

Almost any seats that are actually not too large would fit. What you need is to save the seat rails off your old seats (or get another set from a wrecking yard) and a friend who knows how to weld. Take out one old seat and mount the seat rails in their place. Bolt a metal plate to the new seat and place it on the seat rails. Tack weld it onto the rails and then remove the seat and rails and continue to weld until you're sure the seat won't come off the rails. Repeat this exercise with the other seat and you're good to go. It sounds simple and a little more creativity might be required but it can be done.