I have two small aluminum radiators, ea w/ it's own electric fan that I intend to use in a daisy chain configuration as my heat exchangers for my A2W intercooler. I've always kinda intended them to stand behind the back seat, over the rearend getting fresh air from holes/vents I make in the lower quarter in front of the tires, and exhausting that air through a slot I cut at the top of the rear end tunnel. I looked real hard at getting them in front of the radiator, but w/ the cooling fans, they end up being almost 4" thick. Besides that, there is an AC condenser I gotta accommodate, and an engine oil cooler that'll be hanging in front of the radiator already,..so I just dont have the real estate infront to use. The water reservoir will definitely be located in the trunk, so I gotta run two 3/4" water lines from the front, to the back anyway,...so it's not like putting them in the back is gonna cause me any extra grief. The only possible location in front is standing inside each front fender, right behind the low beam headlight,....but I think it'll be a hot box,..w/ no air getting to them other than what gets there off the road (unless I cut the fenders, and create an intake there.( or.........use the turn signal housing as a intake, and relocate the front t/s/running lights to the bumper......... If I put those radiators in the fender they'll be turned on end ( just visualize turning your engine radiator on end) these little radiators are crossflow pieces...so my first question: Does it matter if I turn these radiators up on end? My second question is a preference question. If I have to put them behind the seat,......would a 5" dryer duct going to each quarter be enough to channel fresh air to an eventual enclosed box that the radiators would suck the air through from the outside? I was considering the design of the scoop that'll have to go into the lower quarter,...three choices: 1. A 5" hole finished w/ a screen/grille w/ a ring bezel to trim the hole. 2. A "NACA" duct, w/ a screen/grill at the rearmost part. 3. A side scoop covering an airbox inlet like what you see for brake cooling that'll actually stand proud of the body,..( I'd use a 65 shelby side scoop for this). The two options for exhaust are: A.To just dump the air straight to the ground through the slot I was talking about earlier,...or: B. I could make heat extractor style scoops and locate them on the trunk deck that would seal to a box that the radiators were in. The heat extractors would be clones of 03/04 Cobra style so I could use the factory trim pieces to finish it. The problem w/ "B" is water. It'll be a b itch getting a good seal to keep water out of the trunk. But if I could get past that,..those scoops may help draw air through the radiators....... So all three of you that'll answer,...what do you think?