Had the shaker in my 07 gt, that I traded for my o8gt500 ragtop,
that also has it. Trunk space is a lot smaller in a convert. with
it. I had a 04 comp. orange adrenaline sport trac, that had a
510 system in it. For my money, no comparison. If your just
thinking of resale value, go to Kelly blue book, and get a rough
idea of what it's worth in previous years. I think it will be
like any other car, the more options, the more it's worth.
The 1000 is quite a desireable option. (I think). It will depend
on who wants to but it, and how much they like loud tunes.
From looks of scaled back 09 production to 45,000, and with
900 scheduled for KR500, I doubt if you will get any great
deals anyway, which should also lead to a higher resale.
In Kelly right now, 07 GT500's tricked out, are listed a $61,000.