rainman

It had all of the stats from this FAQ changeable: http://www.gamefaqs.com/pc/924362-grand ... faqs/33213

I played on a freeroam server a while back that had an extended GUI to mod cars. You could mod stats such as centre of gravity, vehicle height, spring upper and lower limits, etc. I was wondering what this mod/GUI is called and where I can download it. Thanks in advance.