Suicide doors have been around for ages and ages... your best bet (since no one makes a bolt-on kit for it), is to go to a "minitruck" shop, and commission them to do it. It is done all the time on those trucks.
I actually do think it might look kinda cool on a CRX. Never seen one done cleanly in person though.
Oh, and choose the shop WISELY! Be sure to see previous work, and make sure you are looking at pictures BEFORE they give it to the painter... painters have a nice way of hiding shoddy fabrication... lol.