Just picked up a rust free 96 accord lx. Has the drum brakes. I know I can use ex and higher, but mines my a 2 door coupe. Can I use the parts off a 4 door?

 

Yes.

 

Yes you can,

You need the entire rear spindles (with handbrake cables!) to do the rear disc conversion.

It involves quite a bit of work, especially routine/replacing the handbrake cables, as you have to drop the b pipe. exhaust liner etc, take out back seats, take out centre armrest etc

If you get the donor parts cheap it is worth it, but i wouldnt spend too much on the conversion.

Does your car have ABS now? If so, that complicates it

 

^^ Rear drum cars did not come with ABS. If you optioned ABS on an LX, you automatically got rear discs.

Also OP, you would also need to swap the prop valve. Honestly unless you really care about looks it's a lot of work for very little reward. The rear drums are nearly equal to the discs in stopping power. The drums just don't manage heat as well so they may fade a little sooner if you were hot lapping it at a track. I do a lot of fast spirited driving and I've never had issues with the drums on my turbo car.