I can't find the box now, but searching on the net I found it. Mine is from the Ultimate Collector Series, but it doesn't have any silver bricks, like the boxes I found on the net... it has blue bricks instead of them.
Tomorrow I'll look for the box and tell you which model is it.
Yes, that's the one I was referring to. It just looks silver in the pictures. Mine is sitting on one of my computers since I don't have any other place for it in my room.

8420
That one is the newest and largest of the four. It looks pretty sleek and comes with a cool adjustable shock absorber, although I passed it up since I have two of the older ones.
I want to find a decent Technic car, something like a Lotus 7, but all I've found are the Ferrari racers, and that's not exactly what I had in mind.
I'm not sure what that particular car looks like, but you may find something among the older models.
This site has instruction scans for almost everything older than a year or two; look under the 8000 set numbers for the Technic stuff. Of course, if it doesn't exist, just make your own.

That Herc is pretty freaking awesome...
Yeah, it just needs the tail thing on the bottom and the 02 and it would be a perfect rendition.