Lots of options with Maine bulls to increase fram size - depending on your goals
Pistol Pete - great females may add white sox
Caesar - also really good females - may still need certificate to register (Power Plant son)
Polleroid - in my experience huge bull adds tons (too much?) frame with lots of bone & big feet - they are pretty but not maternal and not much performance
Witch Doctor - good old multipurpose bull (also PP son) seems to add frame on small framed cattle
so many bulls, so few cows that want more frame