well here it is.

Rhodes Mopar RL2018 vs my lifters with the suggested snap ring from @Diplomat360




i think it should be ok a million times better then the clip.
and every lifter i see for the 440, their snap ring looks exactly the same.

i am still working on getting a package of crower's snap rings to see if they fit.

three more weeks for the new rockers and push-rods.
wish me luck ill try to update my results.