flyboy_323 New Member Oct 13, 2004 57 0 0 San Luis Obispo, CA Jan 1, 2005 #1 Jan 1, 2005 #1 Does anybody know what size nut fits the header bolt that connects the header to the midpipe?
RIO5.0 15 Year Member Feb 16, 2001 6,892 8 128 N.H. Jan 1, 2005 #2 Jan 1, 2005 #2 I know that Mac uses 7/16 x 14 thread...i believe its a 11/16 nut.