Help? LOL please need the converters touch

Yea i need some help,i am converting a car from Pro Street (supra :P) and i got all the parts organized and done and i did a QUICK texture job on the car. (really is too shiny LOL)
As you can see compared to my R32 it is TOO SMALL! D: Supras are fairly Big cars and this is way too small! If anyone knows how to scale the whole car evenly tell meh please. thanks : )

EDIT: NVM people Grip help me, told me to Select>All then to go Modify>Scale and it worked thanks Grip! :D