So the Predator bearing is just a thinner bearing than the clone bearing? Clone crank is 1.178 journal and the 212 is 1.188. Theres a reason why they have 2 different part numbers for these bearings.
So, I would have to get a clone bearings and the predator rod. I want the predator length, 3.308. Looking at dyno cams, the ducar 212 billet rod from ARC is that length and has a crank pin size of 1.181, closer to a clone. Could that work