Thread: Exhaust systems
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Old 09-24-2013, 09:43 AM   #21
motornut
78K & 79C Jimmys
 
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Join Date: Nov 2009
Location: Ottawa Ont CANADA
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Re: Exhaust systems
both my 78 and 79 are dual 2.25
yes it's a smaller block ,but my stock pipes were 2.5 not 2"



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1978 GMCJimmy4X4-350/203
1979 GMCJimmy4X2-305/350
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