What rear end gears for 904?

The engine and trans are already built and it's unlikely that I'll be going back inside of either one of them unless something breaks.

As far as the engine, the cam manufacturers recommend specific gear ratios from 3.55 up through 3.91 if I remember correctly.

The nitrous is being added for fun factor. So far I'm hearing 3.91 and 4.10, but I'm not sure that I'll be happy buzzing down the interstate at 70mph with 3.91s or 4.10s.