They are like rocking Horse..
Ive searched for just the car and in the end settled for a Small T Imperial, then i sold that as i wasnt fully happy and craved some power..
Ive had a few RS's since yet always looked for the BIG T IMPERIAL and never seen a decent one forsale!!!
I NOW OWN A BIG T, IMPERIAL, 2 OWNERS, MINT and oh.... 511BHP
Keep looking mate, but it could be a long one!
I believe Duncan at Automotive knows of one that has been coming up forsale for a while, so maybe drop him aline?
Good Luck