Nikon lens on canon body?

I have a canon 5D and would like to use the nikon lenses on it (nikon d70). I know there's an adapter needed but can't seem to find which one exactly. Also if anyone knows which online store can ship it, that would be very helpful.

Http://www.bhphotovideo.com/c/product/724050-REG/Novoflex_EOSNIK_NT_EOS_NIK_NT_Lens_Adapter_for.html is what you need.

Why?

And this is why you don't have two different systems

sell the D70 and all the Nikon gear or sell the 5D and canon gear and choose one system to stick with.

You would be better off selling the Nikon lens, and add to that the cost of the adapter and buy a Canon mount lens.