so even if it was an option in the specific year, you have to stick to the specific option of your car?

for instance:

if I have a 1994 and i wanted to stay in c stock, could i put on the r package springs and shocks and be legal? Im hazy on this


so using the following example, assuming it is correct:

I could put 15 by 6 on my car because in 1994 there was an option from the factory to carry that size wheel.

so am i right about this or way off??