I just swapped out the original dark blue strap on my GM for a dark brown OEM Omega. I had expected them to be the same, but they are slightly different sizes on the 6 o'clock side. The 12 o'clock side are identical in length. This is what I measured on the 6 o'clock side:-
.............................GM Original vs Replacement OEM
S-Bar to 1st hole......40mm..................45mm
S-Bar to 2nd hole.....47mm..................52mm
S-Bar to 3rd hole......54mm..................59mm
S-Bar to 4th hole.......61mm.................66mm
I had the original strap on the 4th hole, so the replacement is either tight at 59mm or loose at 66mm.
Looking a bit closer at both straps I see that one is marked 62, the other 65. I had expected that the "65" would simply be longer, but it actually has a different start point for the 1st hole, not just a bit of extra length at the tip.
Can you check the hole to spring bar distance? Would be interested to know how it compares.
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