Romeo/windsor hybrid building questions

More newbish questions, and im pretty tired so please bear with me if none of this makes sense. So i finally starting digging into the motor to get it rebuilt. The car originally had a romeo motor in it, bought a new long block with rod knock, turns out to be a windsor motor. From reading 13 pages on the differences between the two series and various identification markings, I've come to the conclusion that it came out of some sort of 1999 car. I originally purchased main and rod bearings for the romeo motor. Everything I look up says the main bearings are the same for all 99 ford everything 4.6l, no options for vin numbers of romeo or windsor. The only difference is 99 mustang. That is the only vehicle that gives me a part number for the bearings, but is also the only vehicle i know for a fact came with the windsor motor. So oo, my question, does anyone have any information on the bearings, the romeo ones fit, and look the same other than very slight differences in the thrust washers. Is it safe to use the bearings I have now as long as the clearances are with in spec? or should i look into getting a set of the mustang bearings and seeing what the difference is?

I will have a couple head questions once i get this bearing issue resolved and bottom end back together.