And as far as driveshafts go I would not be building them myself, I would be the one ponying up over 2000 bucks for and engineer to spec the shaft and have the tooling set up to begin production on both alum. and fiber options.

As for all the parts I am looking at supplying I will build the prototye/supply specs and have my suppliers/manufacturers in the american car market mass produce the parts, that is why I want to know demand before I spend alot of time and money to sell only 2 of say the driveshafts or whatever.... not worth my time loosing money.