I have the Tuffy double overhead. Up and locked, it rattles. Open and down, it rattles. In the down position, it's only held there by its own weight. For something made for an offroad vehicle, they didn't do shyt for noise. If my ashtray can be designed to lock in an open or closed position, surely something I paid a few hundred for could too.
Also, the current Tuffy overhead mounts from the windshield frame to the center roll bar. I'm a short guy and I've knocked my head on it a few times. Further, the design blocks the sunroof of hardtops. Something that mounts at the rollbar front, both sides of the windshield would be better. Make it with room for a CB, stereo head unit, GPS, garage door opener and other small items. With the top off, it's difficult to secure all of those when parked. Anything to make enjoying our Jeeps easier should sell.
How about a replacement overhead speaker bar? I know there are some out there already, but I couldn't find one that could hold two 8's with proper box volume.
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