You're saying the mounting holes are at 10/11 or the upper hole is somewhere around 10 or 11? Some CS130s have 12/6, some have 2/6. There may be other configurations.
If your upper hole is at 10, looking from the other side would be 2. That will work on a driver's side mount but not on the passenger side unless you fab up a new upper bracket. Worst case you buy a new one with 12/6 mounts and use yours as a core.
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Hank
70 Chevelle SS396(454), M20, 3.73
My Chevelle
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