Never mind, found it: https://www.clublexus.com/forums/gs-...tribution.html

Google can find it....

This is cool to play with though.

http://www.racingaspirations.com/app...ion-calculator

 

Playing around with that tool, I wanted to see what it does when you move the battery from the front to rear. it is very dramatic (I knew that already, done it on several cars). now it shows. it moves the weight distro to 52/48 very easily.