I believe sleepy attached his panels to a roof rack. I'm sure someone else has as well. The converter/charger has nothing to do with the solar charging. At least, you shouldn't go through it. I'd definitely not put the batteries in the generator compartment. that's a lot of weight in the wrong place. I'd mount them in the bed instead and use an Andersen connector.
I don't know if those are good panels or not. There have been a lot of threads that give the basics on what to look for. I'm sure someone else will chime in.
What are you planning on running off the inverter?