[ikey07]

It doesnt, I believe none of them dont know how SA is made, there is handling.cfg file which is static, vehicle handling doesnt take any effect by adding some parts, its just a visual object added, but you can change car files aka dff and txd and if you get shorter wheel base for your modded( not tuning) car, some handling can perform better, even so its original handling, like with kart you can make 180 turn in 1 meter radiuss, imagine you replace infernus as kart, you will get that infernus also make such quick turn.