I bolted our Champion onto the generator slide but I had some 1/2" styrofoam SM so cut a couple strips and the generator sits on them. Even with through bolts it works pretty good and is quieter than bolted straight to the metal. I ran it for a while this morning and I was working around it and the other side and it was not too bad, not like I needed ear protection like some claim...
You got a fantastic deal on it. I thought I did pretty good for our 3500/3000 for $289.00 but would have really liked your deal. Oh well you happened to be to the right place at the right time.
We just purchased a 3500/4000 RV Champion fron CW that was on there "clearance" rack for $194, with the help of some coupons and finagaling. Someone had returned because they thought it was to noisey. I guess they never listened to an Onan running in a moho! LOL It even had a full tank of gas, havent decided where it will reside. Maybe under the back on a hitch cargo carrier, or maybe on the front. Either way, it will be bolted down and inside a sound deadend box to make it quieter. It will also be used on the ranch, being in the boondocks where we are, we sometime go without power for a couple of days after a big snow storm. There is only 1 electrical feed to our canyon and trees like to take it out in the winter.
Make sure you provide adequate air flow for your "sound deadened box" - or it may well be the sound *dead-end* you indicate! -
Resulting in a strikeout rather than a home run..
See the (many) posts about sound deadening in the "3000W Chinese Gensets Info" for ideas & techniques.