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…and I doubt it’ll become available for purchase from the GM Accessories like the transparent roof due to it having to be painted to match…transparent roof doesn’t have that additional step.
The electrochromic roof is also a $3K option, so when it becomes available from the parts counter, I suspect it’ll be $4K (since at $3K, it replaced the standard roof which you still don’t get if you order the electrochromic top) and you’ll still need to have it painted to match, and that’s before even dealing with the necessary wiring/programming IF it can be retrofitted.
IF it can be done, I’d predict about a $5K retrofit…