Here are two conversions of the dirt-cheap High Speed diecast Porsche 904 which is a reasonable replica just as it comes. The photo captions explains the changes. The first six photos are the ones I am talking about. The thumbnails expand I just finished the third Gregg 904 which I will add when I photograph it.

http://public.fotki.com/GMann/peter_gregg_collection/

Can you tell me what scale these are in?

Thanks!

The High Speed Porsche 904 is 1/43rd scale.