340 xhead spring shimming, height and pocket question(s)

I think the beehives may be cheaper than machining? Approx $250 for hives, plus retainers...
The LS units install @1.80", I'm using longer valves on this project, but there are beehives in the range You need....new retainers a must anyway for those so...it's only $$$ Steve!!! Lol..