This is another interesting concept, though not with any porsche replica body, still nice. Its called the La Bala. It uses an MR2 drivetrain. But as well all know, MR2 drivetrains are an awful lot like FWD drivetrains.
http://www.grabercars.com/component/option,com_frontpage/Itemid,1/
What they offer that is completely unique is a build-your-own-frame option. You pay a meager price $150!! and get paper cut-outs for the tube ends with directions on length etc. You lay the paper over the tube, trace it out and cut on the line. Put tube A in slot A - away you go.
To my knowledge, this is the only maker who does this. Makes a very affordable do-it-yourself frame.
angela