What does it take to swap the rear disc setup from an Si onto a DX? Does the whole trailing arm need to be swapped out?

 

i don't know if you HAVE TO but it pretty easy to do the whole trailing arm.
https://honda-tech.com/zerothread?id=1916212

 

You do not have to swap the rear trailing arm you can just swap the hubs. However, I tried swapping just the hubs and gave up shortly after. Just swap the rear trailing arm and get the ebrake cable from a 90-91 integra (it's the only one that will fit a crx cable is to short).

 

I did the same brak eswap on my hatch and my actuall brake lines were too short but I made them work.

What actaull brake lines do I need to get?