In addition to the good advice already given re Panalure and digital, there is also the option of printing on Portra B&W paper. This is an RA-4 colour process paper that some mini-labs use. It is 'panchromatic' like Panalure so it won't distort the colour to B&W conversion and it is made to match the gamma of colour negative film. The image is a neutral or sepia dye image (there are two choices of image colour available) instead of a three-colour dye image (at least I believe that it is, I don't know that for sure). I suspect that digital manipulation is the best answer in this case, but I find that it's handy to know about Portra B&W paper.