I see very few turbo/hard tops.
I have a hardtop, but it's an N/A w/ full turbo conversion and as previously stated, I think there were a lot more turbo/sportroofs made than turbo/hardtops.
Although, I'm not sure whether the serial numbers reflect whether a car is a turbo or not. You'd think so, but I dunno.
Someone like Jeff Lang might know on both questions,
i.e. Production #'s and whether serial #'s reflect turbo or non-turbo.
I should know this...::dunce::
.