[6d7gto]

I have motor mount bolts that came on my car but the mounts were reproduction so was wondering if maybe the bolts are also repros. Head marking is SB with 6 slashes. The head also has a built in washer which isn't like the ones Inline Tube sells and claims are correct for originality. Anyone seen the SB head markings on any of their original bolts? Not SBC, just SB. These bolts are heavy duty for sure, unlike the ones at Inline Tube. Car is 1967 GTO that will be shown for points. Thanks for any input.

[6d7gto]

Oh yeah, these are the 2 pass through long bolts that connect the mounts on the engine to the frame brackets, not the castle head bolts.

[Scott Thelander]

I have a nice spare pair of nice originals
they have great corners
from a 67 4 door 326 car in the wrecking yard
2 weeks ago I was raiding odds n ends parts from ...
matching sunburst foundry marks

Scott
pm if interested

[6d7gto]

Thanks Scott but I have several sets like those you have. I prefer to use the heavy duty bolts I described, but only if they will pass muster as OEM. Hopefully someone has seen this SB head marking on an original GM bolt.