Eh, most replicas are usually based around cheapo cars, not expensive ones like Jaguars. Most common donor cars for kit cars are VW Beetles, Pontiac Fiero's, Ford Pinto's and Chrysler Lebarons (although I think they only Lebaron kit turns it into a late model Mercedes clone).
I only mentioned it because there are a lot more kit cars running around out there masquerading as supercars than there are actual supercars.
Oh, sorry, I had also meant to post the actual link, and thought I had.