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Reply #1 on: Aug 22, 2010, 09:17:51 AM »
My 88 with a W56B is exactly the same as my 87 R151F and my kid's 91 W56 C or D. Couldn't tell them apart.
Not sure about any other years. Hope this helps.
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88 Pickup SAS'd, 3.4 V6, R151F Hybrid, Dual Ultimate, Triple sticks, 35's, 5.29's, HP front, V6 rear, Aussies, 63" Chevs, Anti Wrap Bar, Warn 8274 on Home Built Bumper
4WU linked 86 Xtra Cab build in progress