I agree with the above comments. Header bolt are bad enough to deal with by themselves without adding some locking mechinism to complicate it even more.
On a side note, I use the ARP (stainless) bolts which gives you a 3/8" hex head that allows easier access with a wrench. This is especially useful with the larger primary tubes (1-5/8"+).
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-Brian
'86 Mustang GT Convertible
'88 Mustang LX coupe
'11 Odyssey TE
'21 Insight Touring
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