The Radix is in. The Nelso tune is in. The trans stuff goes in next week. Fantastic improvement but.... Now what?

What can I do to further improve performance?

Throttle body? Injectors? Hotter ignition of some sort? Gears (got 373's now). Don't think I want to go with Nitrous.... sounds dangerous to parts.

I wanna go quick. Recommendations will be appreciated.