I have an SC engine, but my mechanic said that it doesn't matter as long as it's manual. If the part is from an SC car it'd be even better of course, because I wouldn't have to worry.
SC's came with the E51 trans it uses an E series axle, the NA's came with the C50 it uses C series axles, there is most certainly a difference, the C50 axles are pinner compared to the E51 axles.