I know some one with good KYB struts and skunk2 coilover sleeves, both for a 88-91 crx. will they Fit on my 94 civic si?

 

89-95 rear civic shocks are all the same...so if the crx rear shock is from a 89-91 crx they will fit on the back of your car.

If the rear shocks are from a 88 it won't fit...you will have to use 88 crx/civic rear lower control arms

The fronts will fit but you have to use 88-91 civic/crx front shock mounting forks
also the front shocks on 88-91 civ/crx's are about an inch shorter than the 92-95 civ fronts so it works out nicely if you lower you car.