I am considering doing a true dual exhaust on my 98 4.6 4x4 using either the dynomax ultra flow-x or magnaflow tru x mufflers. Anyone have either brand or specific muffler can give me any insight on them? My main concern is droning going down the highway. I have had plenty of vehicles with flowmasters and I don't like that drone they have. They are both priced the same so that is no factor.
Also saw some down pipes off a lightning with Magnaflow cats on it for $100, would they fit my truck being a 4.6 4x4?

Thanks in advance.
Wes