There's a 154 and a 155, and that still leaves out the 160something crew cab long beds. I forget which is which, and it's a nightmare sifting through it on
www.car-part.com. It seems either GM mismarked some trucks and/or the guys at the yards reading the stickers are re-tarded. One is a CCSB and the other and ECLB. I also noticed the frames don't all kick up at exactly the same location.
CCSB
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ECLB
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CCLB
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Useless trivia as far as this thread is concerned, but I thought it was good for a head scratch.