Which one would you choose

[FreakyMalo]

Those hex heads would look cool with the numbers ground off the tops and then domed slightly in a lathe or drill press. Just enough to make them convex without removing too much of the hex faces. A buddy of mine does this on his builds and it looks great. Subtle and clean.

[duallyjams]

hex head on the headers
button head on the fenders

this is a cool idea if you have a lathe

Originally Posted by FreakyMalo

Those hex heads would look cool with the numbers ground off the tops and then domed slightly in a lathe or drill press. Just enough to make them convex without removing too much of the hex faces. A buddy of mine does this on his builds and it looks great. Subtle and clean.

[TopFuel1966]

For peace of mind I would use some split lock header bolts or equivalent.