Nope, actually, these were the same old bosch platinum plugs that have been riding along in the motor for 2 years. If anything, they looked a little whitish from being lean but nothing serious. It worries me that these plugs have a microscopic pin of an electrode. Makes me think that they'll get clogged by some debris but hasnt happened yet. Oh yeah and 1 plug doesnt match the rest. The set is a bunch of r3 131's and plug #5 is an r3 289. I broke one off and noone had these plugs anywhere except autozone and their computers reccomended the 289.
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91 GT Carb conversion, holley 600 double pumper, edelbrock performer intake, FMS "C" drop springs, march 1000 underdrive pullies, crane 1.7 roller rockers, GT-40P headers, bassani x pipe, american thunder catback, FMS 4.56's, msd aL6, trunkmount battery, A/C eliminator kit, 3000 stall tci streetfighter, AOD with transgo kit, A+ servo, 300M hardened lockup shaft, kevlar bands and 28,000 gvw trans cooler, 3 core radiator, 300 lbs stripped with a full interior
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