Try truck/Dakota/Jeep(van?) Magnum manifolds off a 5.2/5.9, '92-'01ish. The early ones are larger diameter, but they all out-flow (most) every stock manifold, and are dirt cheap at the pick n' pulls. I can't personally speak for fitment on your Fury, but if people can wedge them into an A body, they should just about drop in on your Fury.