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Need some help here guys, I'm going to go for glasspacks on my 4.3. What length should I get? 28" or 45"? Is the stock exhaust diameter on a Blazer X 2.5" or 2.25"? Is there any way I can split into duals somewhere near the back? Can a shop do that custom? Should I remove my cat or will I lose too much backpressure? Any suggestions on tips? Thanks for all the help guys!
 

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I don't know about the length part, I am thinking that makes the sound different. The size part -let the exhaust shop worry about it. The exhaust shop can split it back into dual wherever you want, after the cat, after the muffler. My Dad had it done on his 98'. They cut EVERYTHING off including the cat, just past the 02 sensor, split it into duals and put the shorter packs on the ends, 12's I think.
 
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