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spark plugs and other????????sall power 06-24-2009, 02:58 PM a buddy of mine has a 2000 yukon w/5.7 wants to get c.a.i/colder plugs/ and a 160 t-stat what are the plug #s and which are the best ones? he is trying to up his mpgs and performceany hints or clues would be very helpfull vBulletin®, Copyright ©2009, Jelsoft Enterprises Ltd.
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