I've been into copies of copies for a while now and think the way to go for a paint job might be to just copy a movie race car. You've got Steve McQueen's Gulf Porsche from Le Mans. It's an amazing paint job but from looking over the Lemons site it seems pretty common.
So, what about James Garner's car from Grand Prix. Classic, simple lines and we've already got a white car.
Maybe, Paul Newman's from The Winners. I haven't seen the movie but that is an awesome paint job.
Or the Thorndyke Special from The Love Bug. It couldn't hurt to be a bit villainous.
something to think about