I'd give the Skyline VR pipe a try. The Vantage pipe is also quite nice (get the newer one with the reinforced stinger for the FW05)
RDLogics has a few pipes, but not too sure how they work. The one with the reinforced stinger probably is a bit heavy, as the reinforced part is HUGE! But they aldo have a legal and outlaw pipe, so you may have some choices there.