Originally Posted by MikeR
Chris, how does the V1 work with the top up??? In the Crossfire Coupe it would be looking at the rear roof if mounted that high..... not sure the rear reception would be too good... but I am happy with it sitting right below the mirror and it doesn't interfere with my view..... my old triple pillar pod bothered me more....

Good question, Mike.
In my car, I can detect no decrease in reception with the top up (vs top down). Perhaps with some sophisticated signal logging arrangement a meaningful difference could be found.
I did take into consideration the V1's view to the rear (with top up) when choosing the location (making sure it was not so high as to be obstructed). The defrost element and factory tinting of the rear window are potential sources of interference that are beyond my control, but I feel that it does not create an issue in my car (the rear window of an slk is not nearly as steep as that of a crossfire coupe) ... I have never looked at the rear window of a crossfire soft top to contemplate angle or height relative to V1 rear-view considerations, so I cant comment on that.
In all honesty, I have my top down 330+ days a year. I park in the garage with the top down, and in the morning if it is cold .... i turn on the seat heater ... on the odd days that it is raining, I put the top up (sometimes : )
You would be a far better judge than I as to what the level of obstruction to the rear in a coupe might be (for a V1 mounted at the height I have my V1), But I looked at a few side-view pictures of coupes and it looked like the rear glass ends slightly higher than the front, so, to me, it looked like a non-issue.
However, many people are very happy with the below mirror mounting location. I really like how you turned an interesting ebay find into a really cool crossfire solution .... nice work !
Chris