..H&R's should work with your application, since the weight on the front should be no more than what one would find in a 323i. The springs work for both cars, I'm fairly certain. You might want to look and see if there's another application with diffrent spring rates for the 323, but I doubt there is. There should be plenty of support for the M20 in those H&R's, and they're supposed to be really nice springs. HTH! -alan 83 320i 79 320i