If your serious about a k-swap, it'll run about $5-7k, depending on the area, shop, etc... For mounts, u need to buy the hasport kit, which I believe, runs $400. Also, u need to mount shift linkage too, which I have no idea on. Check out hasport's website for further info on the swap and necessary parts.
I agree with exempt though. Putting a k-series in a crx is almost overkill, as far as price. U can buy a b18c 96-2000 type r USDM from hmotorsonline. Just ask Steve there and he'll hook u up.