...There are some mazdaspeed factory springs from an 03 msp for sale in my area, these should be compatible with the protege5, right? Will I blow my shocks and other components if I install these spring but change nothing else? Is it a terribly difficult install...
Super late with a reply...
They are compatible, but sit lower in the rear; the perches on the MSP struts sit higher to give it more travel. Unless you were to grab the struts as well, the drop would be uneven. The install isn't very hard for the avg DIYer.