They work on the MSP, but the back will sit higher from what i have heard. But why do you want Espelir, if you dont mind me asking.
I have a mp3 and have the espelir/illumina combo. It really is a great setup. The stance is just right, and the handling is awesome. As far as performance these they are one of the best spring available for the protege. I got my springs from horse + power + freaks + . + com, and yes the P5 ones are the same ones as the sedan.