I have almost completed my cold-air box. Taken a few days because I only get like a half hour a day doing it, every other day. Decided not to double up the aluminum & put insulation between the sheets. Was going to end up taking up more space. Am still going to insulate the inside of the box though I think. Already have the aluminum painted blue, and drying now. Also doing a "ram-air" system at the same time. Should notice something so I will let you guys know how it goes.

 

Cool man.

Definately let us know if you can tell any difference. I think I'm gonna make one for my 86 this winter.