I believe a 9.5" wide C5 wheel has the same backspace as a 9.5" wide 88-96 C4 wheel.
That being the case, bolt-on spacers for 84-87 cars should be 3/4" thick. 88-96 cars wont need spacers, the wheels will bolt staight up.
That being the case, bolt-on spacers for 84-87 cars should be 3/4" thick. 88-96 cars wont need spacers, the wheels will bolt staight up.