I spoke about something similar to my friend who is a (very good) car mechanic when I was asking him what would be involved in creating an EK9 WRC (turbo charged 1.6l 4WD...) He said he would not attempt anything like that despite the fact that he has his own garage, all the equipment and employes people who could pull it off. The reason he said was not that he would be unable to do it, but it would A) cost way too much B) building it is one thing, but making it actually work WELL is another. I can totally see where are you coming from and I would LOVE to do something as crazy, but unless you have won a lottery and have the budget and time to do it then I would say forget it. It may turn into a (very) expensive exercise.