My current SRH is a 9.5" in 480 Ruger. It has a 30mm UltraDot for a sight. I like the Grey finish for hunting. Yours should still have the quick change front sight. I like to change the front sight to Fiber Optic incase I ever need to shoot open sights.
Go with the Hogue "Tamer" grips. The 454 has pretty sharp recoil. Hogue makes a Standard Grip GP100/SRH, as well as the Tamer which has a Smurf Blue Sorbothane insert down the back. The grip may have been changed out already. Take it off and look at the back on the inside. If you see Smurf Blue it has already been changed out.

Bob

See You At The Range