Akimbeau KIm I run 3 blowers in my car. I steal the air from the front air duct tubes and split it off. I run 2, 4" blowers to the louvers in the fenders to help remove hot air from the motor compartment. The 3rd one is spliced in the right side pipe and sents air down the trans tunnel to help cool the rear diff and inboard brakes. You could run 2 small bildge fans to the foot boxes to move the hot air. Have you looked into tape insolator? It's what HVAC tech use on piping and ducts. It has silver reflector on 1 side and glues on the other side. Works great for heat control My whole trans tunnel has this done encase of a fire. Gives you a little extra time to get out of the car. Mine has a 5 point roll cage. Side notes, no more than 2 4" fans on a curcuit, used 30amp relays and heavy wire in the 12 gauge range. Over build this. 20 amp slow blow fuses. Dropped the under the hood by 25 degrees. Sure it will do about the same for the foot wells. Boating supply shops or E-Bay give the best price. Ps I also cover the blowers with silver tape. The bodies are plastic.
Rick L.