Re: 72 K20 been parked for 31 years!!
Here are some good threads on readily available 2.5" ramshorn exhaust manifolds that would look almost factory:
http://67-72chevytrucks.com/vboard/s...d.php?t=329216
http://www.chevytalk.org/fusionbb/sh...hp?tid/256915/
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'05 Chevy 2500HD 4x4
'72 GMC LWB 4x2 driver
'72 Chevy LWB 4x4 plow truck
'71 Blazer 4x4 driver
'70 GMC LWB trailer
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