Glad you found it!
IMO, I don't think you would see a benefit going big valve. I say this as someone using 2.11/177 valved #12's on a 350. My choice was largely due to availability: They had the right CC's for desired compression, they were ported/upgraded, they were priced acceptably, ready to bolt on, and they were local.
Big valves also will limit your cam lift. 2.11/1.77 are a lot of valve area inside a small bore circle. My setup hit an exhaust lift limit of around .510 lift.
Attached is a view from the crank side of a 72 350 wearing a set of #12's...
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"...ridge reamer and ring compressor? Do they have tools like that?"
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