Which manual trans for track car?

[jlwdvm]

I'm getting some research done on which parts to order for my 69 firebird project. It will be driven on the street, but I'm mainly building it to take to open track days and the occasional autocross. Track days will be spent on Autobahn's 3.6 mile full course. I'll be using a 500+ hp ls, all the Ride Tech goodies, Strange rear, etc. I drive a 2013 Boss at the track currently, so I am used to that trans and gear ratio (3.73) and I rarely get out of 4th gear with a 7500rpm red line. I need some input on trans recommendation, 5/6 speed, gear ratios, clutch, etc. Any info would be great!