This a is a picture of the LBGstuff's Intake over an LS1 V8 engine (work in progress) Left and right Intake and runners Just some of the other pieces LBGstuff makes for the V12 cover
Initial test fit of the runners The runners are sanded down to contour the LS1's intake Metal rods are installed with epoxy to provide an area to weld to.
The plastic is prepped and has bolt holes drilled to hold the mounting plate. Polyurethane construction adhesive is added for strength The mounting strip being permanently mounted.
   
One of the engine brackets attached to the mounting plate. Plastic can be cut, sanded drilled and tapped. This is the throttle body mounts. The two halves of the runners are welded together and the Fuel Injector brackets made.
The valve cover mounting plate and heat shield was made out of 3/16 flat steel and heat shield adhesive used to back it. The Valve covers are prepped to attach the fake spark plug ends. The finished Valve cover and
Finishing touches such as OEM injectors make the disguise more authentic. Did you count the exhaust pipes? Two from the rear you can see some of the mounting brackets that were made to securely fasten the completed cover in place.
Here is the Final look of the cover installed.