Will they fit using the stock crx rails and sliders, or with the civic rails?

 

definitely won't work with the civic rails. a better question is why would you want to downgrade the seats. the stock crx-si seats are imo one of the best seats honda has sent to the u.s. ...

 

because the car came with no seats and i have some ek seats.

 

I think you're gonna have way too much fun trying to get the ek seats in there and once you do get them in there you'll be dissapointed, the ek seats are taller. I'd try to find some stock seats either from a crx or an si hatch. I don't know which year the seats changed but I know the 88 seats won't work in a 90.