My B2650HSDC interior should be the same as your new LX 3310. I went to Wally World and picked up a radio that cost about $25. It come with mounting hardware to attatch it to the opening in the headliner. Sound quality is adequate for tractor use, but certainly can be improved upon. If you are thinking about different speakers to replace the originals, you would be required to remove the cab roof to do so. They are held in place with a nut that is only reached with the roof removed. 17 screws to remove to get the roof off. Most of the music I listen to is from my ipad with Bluetooth earbuds and ear muffs over the top. As stated above, I did have to make the connections to the radio with wirenuts as I didnt take the time to see if there is an adapter to go from the oem harness to the wally world radio.