Here's one a little cleaner, outside the pits at the old French GP circuit, near Reims. Reims, like the GP circuit at Rouen, was composed of public roads, and was the fastest GP circuit in Europe. It was last used in 1966, the race being won by Jack Brabham, who set records for lap speed and race speed, and in doing so, became the first driver to win a GP in a car of his own construction - not bad, eh?
The engine was interesting too - the Repco V8 was designed by Philip Irving ( a famous post-war motorcycle engineer) for the Aussie/NZ Tasman formula races, where economy and reliablity were very important. It was therefore based on the block of the General Motors (Oldsmobile) engine, which was also built in the UK as the Rover V8, a variation of which is still used in the Range Rover!
- The most powerful letter in the world.
, BMW Z1, BMW M3 CSL, Z4M Coupe
I think looking at concours events and originality you would need 2 Zeds lol, one original and one as you like it, but to be honest I think its more important to have your motor as how you want it but still keeping to a good standard and so long as any mods are in keeping with the chraracter of the car then it should still do well at events.
Some mini ones in body colour would do the job effectively. 
