Chris
I am as happy for you as I can be. Just kidding! Good score, now if I can find one life will be good. The big fittings do mean its full flow. Unless I miss my guess, 58 was the first year for the full flow 261, so it looks like you have a 58-62 261. Tony or someone else more familiar with the 261 can confirm or deny the first year for the full flow.
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