If hood clearance is an issue you can use a shorter car intake, such as for an LS1. Dorman makes an aftermarket one, I think. It does mount the throttle body lower so you may have clearance issues with the upper radiator hose connection on the water pump interfering with the throttle body. If that is the case you can use a water pump from a 2010 Camaro LS engine. That engine has variable valve timing so the water pump pulley matches the belt spacing of the truck engines and the outlet for the radiator hose comes straight out the front.
I like the build. Good work.