Those "Winchester Style " conversion kits, made for the 700, won't work for a Big Horn. The bolt shroud thread on a 700 is 1/2"-13, on the Big Horn it's 1/2"-20. As for the OPs' problem with the safety lever, well, I've never heard anyone else complain about it. If there was any discussion or complaint at all, it was "trigger block safety verses firing pin block", and a "tang" style safety is a "trigger block" safety. "Has anyone tried it?",,,,,, a hobbiest might have time, but a full time 'smith,,,,,,,, no. Of course, with enough $$$$$$ (and notice I put 5 $ there) anything is possible!
"Shoots real good!": definition; it didn't blow-up in my face. Not everything can be fixed on an internet forum!