I have a few questions about Cobra CSX3021. in photo 12, what is the black tank on the firewall with the chrome cap just behind the air cleaner and where do the two transparent hoses on either end go? (it also shows in photo 14) In photo 14, what is the hose going into the firewall from the fuel log? Is it a fuel pressure sensor? In photo 14, what are the black "bottles" in the upper right at the corner of the port valve cover? I am a ship modeler doing my first car and am on a steep learning curve! Thanks, John