Just had a thought

I was thinking about building up a car. I've always wanted to do out a Jaguar XJ12. I was thinking of making a silhouette car, kind of like a Grand Am cup car but streetable, not necisarily legal. I was thinking about using the TVR Speed 12 engine, as well as puting a tubular spaceframe in it. I was also thinking about putting a Huland or a Porsche transaxle in it, as well as having front and rear subframes for easy access to components. NO NOS, was thinking about supercharged though, maybe 3 to go along with the 2 sets of long runners like stock as well as a set of short down the centre for high end. It would cost all kinds of cash but I think it would be the ultimate sleeper. Would do aero of course, like a airdam/splitter/difuser. Well input on this undertaking would be great, don't know if it'd be too safe but it be really fun to drive. Thanks in advance.