:english:
i don't really know what you are asking. if you have a crx you would have to use an si tranny from another crx, and if you have a 5th gen civic you would have to use an si tranny from another 5th gen. crx trannies are cable clutch, 5th gen and newer are all hydro.
so if you are just using crx or 4th gen civic trannies then yes they will bolt up.
and if you are using 5th gen or newer civic's and trannies then those will bolt up.
but a 4th gen will not work with a 5th gen and vice versa.