Ha haaa! "You need to go to the Mall and ask Santa Claus" for the T-type
"Who do I look like, Rockafella?...." (my Dad used to always tease me)
Seriously, as far as 6 point Rollcage, mine goes through the side of my speaker holes in into the back frame like all the others, but I still have a little room to finneggle (did I spell that right) for speakers to be custom fit.
Just remember 1 thing however. A rollcage is going to completely change a lot of things about your GN. For 1, you're always going to hear it. Any vibration at all will be heard through the rollcage. It'll resonate.
2) Possibly sacrafice your stereo speakers, unless you're pretty crafty and can just listen to the front ones, or customize your speaker situation.
3.) No one will really want to ride in your GN. In my case my 5 year old loves to climb into mine and thinks it's fun. Sorta like Monkey Bars when we were kids.
4.) I'm originally from South Beach in Staten Island (the Ole Italian Neighborhood), and it's like we used to say "forgetta bout it"
Good Luck with your Rollbar Choice or Decision. I'd personally tell you if you have reservations about it, then don't it dude- you'll be sorry or really happy.
Look at the % of how often you use it at the track vs. how much you enjoy to drive it around town and such. Then go with the larger %.