I assume you mean the Hudson Bay Railway. To my knowledge, the only company to have made prepainted engines in the HBRY scheme is Railcraft Canada, using Walthers Proto 2000 engines. They have all been been very limited runs since the HBRY is not the most popular railraod in the modeling world. You can can contact them at http://www3.telus.net/wrdixon/mr/hudsonbay.html to find out about availability and prices. There have been models produced in N scale and HO scale so you should know which scale your friend uses before buying.
HO Scale Modeler