hello,i heard a software called LFS_Project3-RCFinal. it can set up the data of the car. anyone knows where to get it?

This is Bob Smith's VHPA (Vehicle Handling and Performance Analyser), which can be found HERE.

What it does
Allows you to open any LFS setup, analyse the effects of various parameters on vehicle handling and performance and, through understanding of the information presented, help alter setups to achieve the results you wish with minimal trial and error testing.