Making some “Supernatural” renders, are we?
Yeah, that car would be sweet to have a digital copy of. I haven’t seen one yet, but there is a freebie “muscle” car you could probably get away with using that might suffice as a substitute over at:
The boys haven’t always driven the Impala, and sometimes they just borrow the nearest badass vehicle they can get their bloody mitts on.
You can always check TurboSquid for both items. You might find them there, but they might not be monetarily friendly.
Some good firearms that you could alter (saw your own) can be found over at:
http://www.ontarget3d.com (Seems to be having issues as of now)
Try this link: http://www.ontarget3d.com/site/Category/56-free-stuff.aspx
Here’s the one I would modify (make saw-off version): http://www.ontarget3d.com/site/Products/1028-coach-gun-for-poser.aspx
Or, you can always do a conversion of one of the ones found at the SketchUp Warehouse like this one: