I'm not crazy about the knocker in my Gottlieb Surf n Safari. I'm thinking about swapping it out for a bell instead. Just curious for thoughts on this -- good idea/bad idea, anything tricky about doing it, etc? I see The Pinball Resource has a 5" bell assembly that can be fitted with an A-5195 coil. Would this be an easy swap in?

If anyone is curious, I did go ahead and put in a 5" bell from The Pinball Resource (with A-5195 coil and diode). It was a dead easy swap out, and works well. The bell sound is a tad muffled but, for me, a big improvement over the piercing crack of the knocker. I'm happy with it overall.