The application date for the popular Hooker 6114 for FE Mustangs specifically states they are for 16-bolt heads, then a footnote says "except Cobra Jet". I sent a message to Hooker asking what this meant and the reply said that the CJ bolt pattern and port size are "different". This makes no sense to me, and I know many are using these on CJ Mustangs with good results.
Has anyone determined the real reason for the footnote excluding Cobra Jet from the useage of the 6114 header?