My front wheels are 20"x8.5" 40offset. what size and kind of spacers do I need to ask for when I buy them. Thanks in advance.

 

If you have the non-brembo's you might be able to get a 5mm and get away with it...
but anything wider than 5mm you should get new lug studs installed. Even with 5mm
I would not recommend tracking the car unless you get longer studs.