No offence to anyone who has fenderwell headers on their big block A-body but IMO thats a move one needs to think about carefully before jumping in. On a rough car for say bracket racing, or a low buck car where max performance for the least money is the goal they make sense but I would not take a sweet looking car like the Viperredduster and cut it up to run fender well headers. To me thats a move that screws up the character of a car like that and I'd bet that it will lower the re-sale value and even turn some buyers away. To me its alot like tubbing a car these days, the wow factor of it is gone and its a can't go back or at least a lot of trouble to go back move.
I'm new to MOPARS but quickly learning. I'm building a 440 Duster and I wound up buying Schumacher shorty headers even though I know they will cost some power. The trouble with under the car long tubes is that they won't fit with power steering, they trap the starter so if you need to remove it you will have to remove the header first and getting at the spark plugs becomes a pain and on top of that the plug wires burn up easily because the headers are so close to the plugs. Fenderwell headers eliminate all these problems but I've read that depending on ride height, and wheel/tire combo you wind up with tire hitting the header tubes when you turn sharp like a parking manuever. Also as I said before alot of guys like me don't want to start cutting up the car to make things fit. I'm pretty sure I saw in one of your posts that you were going with a small block so the under chassis header might not have any of these problems, all the research I did was for Big Block A-Bodies. Good luck what ever you do, be sure and post some pictures and tell us about it.
