Just put one of these in a G-machine Chevelle. Made a ton of difference. I think the pump could be adapted to the stock Miata tank with just making a new plate to go into place of the stock unit or even retrofitting the plate from Mazda. There is also a complete fuel cell system from Aeromotive and I think that may be what I go with down the road. I mentioned this system to Kevin Patrick when I picked up my frame this morning. Exomotive is a Aeromotive dealer I wounder if we could get a better price with some kind of group buy.
Different sizes to pick from at a little less than 800 bucks. I think the sizes are close enough to the published sizes on the Exomotive site Warren posted to fit.