if you run OEM bearings you still have to plastigauge to make sure your clearances are correct. same goes for ACL/KING/CLEVITE bearings... or am I missing the point of where your argument that OEM is best
which is why you'd plastiguage and check clearances while assembling...
That eBay kit was touted as being "all you need," and I only saw one set of bearings in there, also no plastigauge strips.