I've been researching this as well. I like the looks of the Hughes the best but man are they expensive! $760. They are 1.65 ratio so I would need to make sure I have enough piston to valve clearance for that. My cam is currently .507/.513 so 1.65 would take that to .523/.530.
I've also looked at Harland Sharpe 1.60 ratio for around $430. Here is a here is a pic of the Hughes set
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