[onewhippedpuppy]

I've owned a 996TT, 986.1S Caymans, and a 987.2 Cayman. While I would definitely call the 996TT a GT car, I would also say that your 987.2 is more of a GT car than a 987.1. With each newer generation Porsches get more competent but also more isolated and comfortable. The 996TT is comfortable enough to drive across country but can also embarrass many supercars on a race track. It might be comfortable but it is very much a supercar. It will outperform the 987.2 Cayman in every measurable way. Those modifications will also push it more towards the sports end of the spectrum, it should be an absolute rocket.

One other factor to consider, the 996TT is a smoking deal right now and won't be for long. They have bottomed out in value and are definitely slowly rising in price. Most of the magazines and value guides list them as a "car to buy now". So if you buy it and change your mind, you can probably buy another Cayman for less while also selling your 996TT for more. My 996TT is one of the few cars that I really miss, and I fear that when I am again in the position to buy one, I won't be able to afford it.