You might want to double check, but GM was using "Header-Like" exhaust manifolds from the factory. If that's the case, you won't get much improvement by putting on headers.
block hugger headers
what kind of headers do i use when installling a 72 olds 350 rocket into a 85 olds cutlas supreme ? long tube or short tube headers
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Yes you can use headers in Excel. You can also use footers. Like in any kind of printed document, there is a margin area in which headers and footers can be used.
Most Yukon people do workk in timber and fishing.
Check owner's manual but the Champion part number looks up as: Part #: C333013
The 2005 GMC Yukon has a 4-speed automatic.
The 2009 GMC Yukon has a 4-speed automatic.
The 2004 GMC Yukon has a 4-speed automatic.
The 2001 GMC Yukon has a 4-speed automatic.
The 2007 GMC Yukon has a 4-speed automatic.
The 2008 GMC Yukon has a 4-speed automatic.