Franked, you mention you are looking for a solution for issues with this adaptation of a stock style roller lifter for how your engine is configured, what are the exact problems you are trying to solve? Is it because you have more lift than the dogbones and spider can handle, or something else? I am curious since I have been looking at doing this conversion (with a look to avoiding the failures of the tie bars on aftermarket roller lifters). My application is a street application with E heads, and I am not pushing the lift numbers much past .520. I am still looking for the right cam and lifter combination. Jim Lehart came up with the original developments and use of this option: LSX hunter covered it briefly in a video on his channel
https://www.youtube.com/watch?v=fAKTh3uWBrE