I remember Top Gear talking about it, and I watched a video on it. I haven't looked it up yet, so don't believe what I say just yet. I watched that video 2 weeks ago or smthn like that, and I'm just saying what I remember.
I don't have a real source, but I'm sure you could find a couple good ones on Google.
The SCG 003 should be around $1-2.5 million USD if I remember correctly, and boasts a 4.4L V8. I don't remember exactly, but I know it produces 750hp and around 850NM of torque.