Welcome to GTA ,, it's very nice to have you with us. I just bought a gas ram rifle, the Benji Trail XL in .22 cal and it definitely is quieter than my springers. Also, like Robert said the gas ram doesn't have any of the torquing or vibration that springers have,,,, I find it much nicer to shoot. I've never installed a gas ram so I really can't answer your question about installation, but I'm sure someone will chime in who knows.... Again, WELCOME....
Jeff