Mine at 3160 with driver, 600hp and 540tq goes 10.1’s so I’d go straight for the 8.50 cage unless you plan to run a throttle stop. Caltracs with stock length front segments have been inconsistent in my experience - good shocks are a must, especially if you’re running drag radials.

As for the front suspension - I’d work to free up the stock parts, make sure you have 5” of travel and run it. Maybe tube upper control arms and strut bar. For sure put good front disks on it. I’m happy to share the details of my build - feel free to PM me anytime.

Sounds like a fun build - keep us posted!