Operation Torquey-Pig

Instead of drilling all those holes and worrying about all that stuff how about if you just use the straps like the lifter Valley windage tray uses to hold it down.
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.