Hi Biph.., welcome...
Unless you're 4' tall....the point at which your butt hits the seat, should be 4" (or there about) above the floor, where the seat mounts.
Much taller seats will have you ducking under the WS frame to see out.
Import seats work well.
Use the "SEARCH" feature above right on home page to see what folks have been successful with.
Actually, I prefer the "stock" seats but not having them, I went with older Toyota Celica seats....& made some mounts using angle iron. They sit plenty low & are quite comfortable.