I am the 2nd owner. I purchased the SSR at an estate auction with less than 21,000-miles and it had not been licensed since 2010. My local Chevy dealer did a full service and confirmed everything is 100% okay plus I replaced the original battery.
2004 Chevrolet SSR (Red)
I replaced the radio with a modern touch screen module so that I could add a back-up camera for improved safety. I also replaced/upgraded all of the original speakers plus added a powered sub that is mounted behind the passenger seat. The tunes are really great.
Wheel and Tire
When I replaced the original equipment tires like-for-like for safety reasons (they were 13-years old) I was amazed at how the SSR's ride and steering improved.