I wish I had higher res version of all of those
I do have a folder with all my awesome thread megaposts (and posts by others) which I keep meaning to upload to megaupload.
Apparently although i pretty sure it wasn't a works effort though
EDIT: and i would be wrong it had it's works debut at the 1971 Monte Carlo rally however it appears that it was only rallied for one year by the factory. I assume the rest of those pictures came from privateers.
Yup originally i was going to say it was an E39 M5 with the plenum taken off but the stacks are all wrong and it isn't the Dinan induction kit either. Honestly i can't even really make out the motor however given that it is European Car that pretty much means either BMW or Audi (maybe Jag).
For reference this is the inside of an E39 M5 Plenum