If funds are tight and you cant find a DC5R box, you can also use a K24A3 box. Gearing wont be as good, but its a hell of a lot cheaper.

Additional things you need as a bare minimum for a K24 in DC5 conversion are

Engine mounts
and Kpro, tune.

If you can afford to do these as well I recommend it

Lightened flywheel,
HD clutch