You Sum-bitch...................Sike.
When I originally bought the Sling, I got the base model, with no radio. I didn't care about the radio or GPS or any of those things. When I looked into the pods and speakers being sold for the Sling, I was not interested in installing a system then either. Too many compromises. Legs blocking the speakers was the main reason I was not interested. Eventually I bought earbuds, and I was satisfied with that. I rarely use them, because I enjoy the sights and sounds of driving the Sling. I also bought intercoms for my helmets last year, but have not used them yet, because I really only got helmets in case I have a passenger, or going into a state that requires them.
Every system I have installed in my personal vehicles, has been sound quality based. I never cared about "I have this many speakers", "my system makes this much bass", or "my amps are this big". Over the years I focused on the details, and refined my setups, and minimizing the amount of components. I didn't build this system to impress anybody but myself. I mean that in regard to I am not going to be driving around blasting it to be showy.
Overall, In this project, I have CNC machined parts, 3D printed parts, etc. I also built a system outside the norm that you will see in a Slingshot. That all made it more fun and interesting.