Go back and re-read what I said. If the parts were available as stand-alone options, you could use them. For 1994, they are not.

The 15" wheels were ONLY availabe on the M edition, so you would have to convert your car to ALL of the M edition specs to use them.

The R-package suspension was only available on an R model. You would have to convert your car to ALL of the R model specs to use that suspension.