I have a 94 lx 4 door just wondering if an ex rear sway bar will bolt up?

 

I wouldn't imagine Honda would put totally different suspension components on different sub-models. I think the EX just has the rear sway installed. As long as the distance from trailing arm to trailing arm is correct it should work. From looking at a diagram it looks like the rear stabilizer bar has endlinks (a peice of metal with a bushing on either end) One end attatches to the bar the other to the rear trailing arm. The end link is bolted through/to the trailing arm. So you may have to make holes in the trailing arm to mount the endlink, you may not but either way you will need the bar, endlinks and bushings, as well as the bar mounting bushings, also check for bolt holes in the body for the mount bushings.