340 T/A (U code) head value? (Pics)

You Have Got To Tell Me That You Are Joking........................

(Clifton James, "Rancho Deluxe")

Honestly that's what I'd pay. I'd use them.
Thing is...only advantage is at the pinch ...and thst would require modifying them and losing that collector value 'to an extent'.
I did state that a numbers guy would offer a 1000 or more for them. That's the truth, could be 2500. But as is, 800.00 is as much as I would gamble or would pay to have a head marginally better than a regular j head.
I'm not a purist collector, though I am into oddball vintage performance,factory or not.
I respect you might not agree with my view.
I didn't mean it as the end all.