All right, I looked around and really didn't fine anything on a how to about this so i'll write one up. If you got questions please feel free to ask.
I guess the tools needed are what ever you want. I use a very sharp knife but with this method you need to be very carefull as you don't want...
Alright guys lets compile the top ten must have upgrades to make to your stock HPI Savage for the benefit of newbies.
Overall top suggestions:
Hump pack (Venom 1504)
Fail safe (Venom)
High torque steering servo (Hitec 7955tg)
Hitec HS-645MG throttle/break servo (perfect for the below...