Or if you want a track car George Smith's Castle Corner Racing Super Saloon Backdraft is up for sale for R250000 ( about 30 grand Australian)..thats a steal.
More here...
George Smith's Super Saloon up for Grabs
and one of the links reference Tony Martin (As Spooky recommended) and his lexus powered backdraft set ups...
CONGRATULATIONS - GEORGE SMITH & TONY MARTIN
Sounds like a winner there!