I am looking to buy this 89 civic ef. It needs a little bit of work but its in pretty good shape overall. The car needs a crossmember. Wondering where I can one at and how hard is it to install?

 

can find them in junk yards, and if ya can use a ratchet you can install one there not hard at all

 

They are not extremely easy to find on forums but a junkyard like this guy says is most likely your best bet. Installation is easy
2 Bolts on each side which I believe are 17mm then the 2 in the front that secure that one bar (don't remember the name of it) that you will need a deep socket for 14mm I think
and it's off.....not hard
good luck