I have an 86 firebird started as a base f-bird 305. I am unsure of the wheel backspacing. What spacer do I need to change to a vette z06 wheel i think that is what it is its like 5 spokes but divided into 10 smaller spokes will see if i can find a picture my buddy has a set of these and im want to make them fit but i am unsure os spacers?? Someone help please? they look like 9.5 width wheels and like 190-195mm backspacing i dont know if this is close but im hoping someone knows what wheels these are and can help.. thanks

 

Taken from his website:

C5 Corvette Z06 17x9.5 front 54mm 7.2" 2.25"
C5 Corvette Z06 18x10.5 rear 58mm 7.9" 2" Rear