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Re: Single to duel exhaust do much?
Should boost your gas mileage and power a little bit. Not an option for K5s or any other "K" truck (BB 2wd trucks?).
I'm an admitted "purist" but personally not put off by dual exhaust. Your K5 is so clean you may want to consider an additional set of OEM exhaust hangers and make use of these at time of the install (per-existing frame holes already supplied by GM). IMO the extra hangers help preserve an OEM-type look to the dual exhaust. I made use of a set on my K20 build and have sets for both my K5 and K1500. Also, if I had your K5 I'd stick with the factory exhaust manifolds rather than headers.
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1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547
1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308
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