what do you think the best exhaust system for the 351w is ?

 

are you lookinf for single exaust or dual, id go with dual cause it sounds better gets better performance, but the best thing to do it get a set of headers junk the old manifolds, (they are probably cracked anyway) and get true duals. IF you want put cats on but sounds way better with out em. mufflers naa dont need em.. but if you dont want it so loud as to wake your neighbor hood up get cats, YOu can try and run the pipes down both sides but gas tanks may be a problem, if they are just run the driver side over to passenger side and out the back. Hooker headers sells a kit with 2 1/4 pipe with all pre bent tube hangers and clamps, this kit requires mufflers so they will quiet it some but just get the cheap $15
summit turbo mufflers, they dont do much for sound,,, hope this could help

1991 f-150 4x4 302
hooker headers, straght pipes
33 goodrich mudders
3" body
stock 3.55 gears
260-280 hp and 380-410 ft lbs of torque
all from crane camx powermax cam and lifters kit, bmk throttle body throttle body spcaer, crane cam rockers, more to come......
FORD BEATS THE BOW TIE EVERYTIME