Nice site with a lot of RC-F1 information on it. The SP-1 is the chassis I bought from speedpassion. Awesome chassis with just acouple of flaws (Soft plastic, which they are releasing new ones), and a manual that "lacks" continuity, and doesn't seem quite complete. (Compared to Serpent and Xray). To my knowledge its Speedpassions first chassis, so I think they did a pretty good job. The quality of the aluminum and carbon parts are excellent!
http://www.rcformula1.com.au/index.php/articles/chassis-guide/432-speed-passion-sp-1-chassis-guide
Shawn.
Looks almost like a WGT
Basicly, its a 1/10 pancar, with long front suspension arms. The chasis is pretty narrow, but with todays shorty batteries, low profile servos, and a small ESC, everything fits just fine.
These cars run on rubber tires though. (or foam in europe).
Shawn.