I tried the stage 8 locking header bolts and didnt like them. Sent them back and got my $45 back. They didnt clear the headers right and were more trouble to install than they were worth to me.
Do you retighten your header bolts after a couple heat cycles? If not, try that. Works for me.
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2002 GT
1993 GT (SOLD)
'93 Mustang GT
RHC member #142
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