Yes, this has been done before, but not the same way.
The rules:
- Car must be stock to begin with
- Total budget is $150,000 (Let's just say US dollars)
- The car must cost less than $80,000, with the rest of the budget going towards modifications. Add up the costs.
- List the modifications and (if possible) predict performance numbers.
- Car must be streetable (Don't worry about emissions or anything like that though)
- Pictures would be nice.