Haynes Forums - mx5 parts wanted

I've come to think that people start a Roadster build full of good will and intentions but never get past putting the engine in and this has started to depress me a little. Given that people can build their own chassis it limits me some what as to how many I will sell, so I'm moving in a new direction with regards to products that are a little less labour intensive to the builder. I'm looking at some thing that might appeal to people that just want to bolt parts together then drop a body tub over the top.
I'm in need of the parts that are of no use to roadster builders these being the front and rear sub frames with wishbones if possible and the back bone. If any body has any of the above left that they may want to exchange for wishbones, polybushes, GRP parts ,roll bar or just to get rid of it to keep 'her in doors' happy.