Just finnished installing split exhaust manifold from kanas kustoms on my 51,3100, with 235. had the muffler shop do the mufflers and pipes, used flow masters ,not real loud but throaty sound.also installed a 15" grant steering wheel and turn siginal assy from a 55. any way truck sounds good with new exhaust system ,and steers better with new steering wheel, last few days been busy working on my truck.old navy 51...........