^ yes. I swap out the lower seat pan in the MX3 recaros to a LX/EGT pan to allow for the additional tilt feature.
i haven't ever compared the non recaros to other recaros. but i can't imagine they would use different rails. the roof height doesnt change, nor does the floor pan mounting. so that could complicate things if they did.

I would say its probably a safe bet to assume the seat rails are the same.