Ok, I posted this question in the crx forum, but nobody helped me. This is what I wrote...maybe you guys can help me

Ok, so at my local junkyard there is this acura legend with all 4 disc brakes intact and all, so I was wondering, if I take them off, are they compatible with my 91 crx si? I searched, and there was only one thread about this, but it was referring to an SiR knuckles, and I dont know if there's a difference or not, within the thread it posted a link to a different brake upgrade, it may be similar, but I think it referred to mixing and matching alot of diff. parts, instead of using everything, or most of the stuff off the legend, I'm not that wise when it comes to brake systems. I really dont want to hunt around too much for parts to make this work, if it's readily available though, I would. Does anyone know? I would like some info on this, if you guys can help me out. This is the thread I found
https://honda-tech.com/zerothread?id=1382191

 

Anybody? I know its not like a direct bolt on mod, but does anyone know for sure, or tried it?