I hope you have a few wide angle lenses cos because of the crop factor, many older lenses which are typically 28-XX are not of much use on a crop DSLR. They are just way too narrow. K20D is a kickass body. If you can afford it, buy it alongwith the screw mount adapter.
Ask JJ Mehta. Those chaps might be able to source a body on request but be prepared to shell out a bit.