Mod Blasters..!!!!

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PSI Mod Blasters on the sled I just picked up..Cool.....Just need porting now..

 

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So how does one tell the difference between the mod blasters and the stock psi pipes?

 

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I going with no internal stingers theory .. I straightened out a coat hanger and put a small little hook on it went into the pipe and found no lip inside them..