i do believe the O2 is actaully in the cat on the newer -S-dime trucks.
As for duals or singles, there are pros adn cons to each. a singel will give you more low end, due more backpressure sine it is a smaller diameter tube(overall, compared to 2 pipes) The single 3" has less surface area than two 2" pipes. However , a true dual setup will give you a better peak gain, but with a true duals, make sure you atleast have an H-pipe, but preferably and X-pipe to keep pressure equal between the two banks of the motor. I like duals personally, but performace wise a good single pipe will do just as good as duals, but you probably wont be able to tell a difference between the two anyway as long as they are comparable systems.
Tyler Jones
2000 426EX, 11:1 wiseco, hot cams stage 3 "stroker" cam, Ported head done by Dr. G, FCR 41, Hot rods crank, running no base gasket, 1 layer of 3 layer head gasket, Klotz 113 race fuel Feather carbon smoothie hood, works tripples w/ressies, Black HMF slip on, AC pro peg nerfs, Azonic fat bars, burgaurd +1 1/4" swinger, Lonestar +1 stem, douglas yellow label front wheels, Pro Armor front bumper, + some others goodies
AIM: Fourtrax426
Holeshot Motorsports Wilder, KY
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