Cold air intake…. I am going down!!!!!

These side scoops are small and feed into the sealed air box. According to the EFI inlet air temperature, the air is 45 degrees cooler with the air coming in from the scoops vs having the scoops disconnected and pulling air in from under the car. The air box only sits about two inches over the engine screen and does not effect the rear vision out of the back. The rear deck did not have to be cut for the air box. The engine is the car is a 390 cubic in Fontana block stroker producing about 550 horsepower. At wide open throttle for an extended period of time, the engine does not run out of air.

To understand the issue we need to understand the aero-dynamics. The big hole in the engine cover is a low pressure area created by the air flowing over the roof (same principle as a carburettor). This depression sucks air up from around, e.g. under the car. Side scoops will help to feed this low pressure volume, as will a top scoop.

You may get some turbulent air from the roof flowing into an air-filter extension, due to the vacuum suck of the engine. It won't be as much as ram-air from a scoop.