I believe I have answered two questions for myself

- what should I do with the black bars that came with my roadster roll bars?
- where might I put a set of "rear" speakers?

I was looking at the bars and it came to me - there are a few speakers on the market that have a triangular cabinet that would fit into the black bars if they're put on the roll bars backwards. And if I could find a speaker enclosure that fits in the space, it would be a great way to get better imaging from my stereo and use those rear speaker leads that came with my aftermarket head unit without making any holes in the interior panels.

More on this in the audio section... (click)