9 9SECVSIX Member Joined May 25, 2001 Nov 6, 2012 #1 Like the title says.. FYI the oncenter housing has a 4 bolt flange for the down pipe also 4 bolt flange to the header, Thanks.
Like the title says.. FYI the oncenter housing has a 4 bolt flange for the down pipe also 4 bolt flange to the header, Thanks.
