Any Toyota bucket seats from an MR2, Truck(through Tacoma), 4-Runner(through 3rd gen), are direct bolt-ins. Paseo, Cressida, Corolla, Camry, Celica, Tercel(through the 90's) front & outer side-mounts should line-up w/the trucks, you might have to drill a new hole for the inner mounts.  Supra seat's front mounts line up up with the trucks, but the rear mounts need some work.  The inner rear mounts don't mount to the floor like in the rest of Toyota's, they mount to the drive train hump, so you have to weld up a different mount.  The front mounts of most of the Japanese cars through the '90's line up with the bolts holes in the Toyota trucks, and usually the outer rear, but the inner rear usually requires drilling a new hole. 

A lot of the 2000 and newer Japanese cars have thicker seats, so you need to measure their thickness(rail-to-top of seat), or you could end up with seats that reduce your head room.

If you can weld/have access to someone, you can always swap the seat rails from the seats you have now to a set you want to use.

Thanks for all the info......I guess I'm gonna have a look around and see what seats catch my eye.aren't to spendy and super comfortable and go from there......The fabrication part will be easier then the decision.......once i get em swapped i'll put up some pix!!