Operation Torquey-Pig

I’m all for easier, do you care to elaborate? Are you referring to the lifter guide retainer plate (spider) as “the lifter valley windage tray”? I think the taller cam bosses on the roller blocks may be the bigger pitfall to overcome here. It may require the spacing for the lifter guides in order for everything to match up for the retainer plate to hold the guide bars in place.

This is not a simple mod to implement due to the lifter "yokes" . The tops of the lifter bosses are machined in a very specific shape that allows the lifter yokes to nest inside of them. This is way more involved than driling and tapping a few holes for a tin retainer plate. I'd save my pennies for the Crane retro-fits . J.Rob