Great Work Alex, but i'd like to give some constructive criticism, if you don't mind.
I loved playing in GTA IV, but this handling just doesn't fell right for GTA V.
I don't know how, but cars seem way too slow and heavy, even more than they were in GTA IV.
Also the damage, as much as it looks awesome, feels too sensitive.
In IV i had to really damage the car before one wheel got stuck, while in V, with this handling, even the smallest impact causes a wheel to get stuck.
Basically you can't drive your car for more than 2 minutes before having to fix it with the trainer.
I am almost sure the problem is the game itself, and not the modders (who did a terrific job)
It kinda feels like the V physics engine just doesn't work well with GTA IV settings.
I think a complete rework of the physics engine is necessary to really appreciate IV's handling.
For example most of the cars almost don't turn, while in GTA IV did (even tough they wobbled a lot)
The best example is using the Imponte Ruiner (car available both in IV and V), in V (with this mod) is almost undrivable.
(The ruiner has always been my favourite GTA IV car, so i know its handling well ^^)
Still great effort! Don't get me wrong ^^