Nah seriously tho mate, theres a LOT of stuff for em for the 1.6, mainly involving turbo conversions (and some supercharged ones too), more stuff for the 1.6 than the 1.8 actually....

HKS/Trust both do bolt on turbo conversions that give a good 200bhp+ on std 1.6 internals, and companys like Tein and Cusco do tons of suspension and Diffs for em.

And as im EXTRA clever, check this out...

http://www.flyinmiata.com/ the big MX5 tuners in the USA who sell everything under the sun (dont forget exchange rate is nearly 2dollars to a quid now! )

http://www.greenline.jp/catalogue/bc...6CEA&intake=NA this is Greenline Motorsport, qualirty cheap as fuck people for getting parts direct from Japan, i deal with them a lot and they spot on They sell 3 different turbo conversions for the 1.6, inc a quite mental trust one with external wastegate for 3k or the most basic one which IIRC is good for 200bhp for only 670quid!