I keep hearing about transmission tunnel heat but have yet to feel it. And that is both of my NBs.
I didn't until I added the turbo and larger exhaust to mine, which makes sense. I still need to do something about that, it's not bad, but I can feel a little extra heat in the tunnel area and I get some hot air coming up around the e-brake handle.
I've got a lot less horsepower - luckily they are Japanese horses - usually in better shape and more motivated.