I'm "running" Fenton's,dual exhaust,stacks from J.C. Whitney,(replacements for the "No-Power"(HAHA) "Derdge" "Lil Red Express". I opted to keep the stock intake/carburetor. Gas- mileage (in a 2-ton),increased impressively by about 3-4 M.P.G.!! I also have better accelleration,in ALL 4-gears,even with a load,with the rear on the "Hi-Side".The only other "mod's" that I'm thinking about adding,for performance,fuel saving,would be a H.E.I. distributor,and a single-wire alternator. And here in Iowa,I NEEDED to install a single-tube heat-riser,but that was included with the headers. Hope this helps. B.T.W...I LOVE the sound of the duals!! And as previously mentioned,the engine idles NICELY,at about 900 R.P.M's.
Last edited by wetwilly5757; 12/02/2012 8:28 PM.