You shouldn't just drill the holes and put in ubolts, the ears need to be machined down a bit so that you get more contact area on the cup with the ubolt.
Don't believe everything you read on the internets. Gaylon's driveline has the 14bolt straps.
They also have the correct 14bolt straps, which no parts place carries, and it does make a difference-- the right ones have little nubs inside of them and are designed to bolt flat.
Don't believe everything you read on the internets. Gaylon's driveline has the 14bolt straps.