Take a look at the dates on the pixs. They range from 2006-2010. One pix has 4 1bls and one has 2 3bls, and some exterior shots show a single round air cleaner, which wouldn't have worked with either carb set up.
The car is called Passion, It was made by Rad Rods by Troy. It has been in the Milwaukee area for several years. The upholstery is a patterned brocade. I also think it is powered by a twin turbo injected 373, NASCAR motor. Your version is coming along nicely.
I wouldn't. First, a silicon mold will pick up all surface details and imperfections, like powder residue. Second, silicon doesn't stick to anything, but silicon. I don't use any release on my masters.