After deciding to name the "Park" series dome cars after famous Canadian parks, leading Canadian artists, including members of the Group of Seven, were commissioned to paint suitable murals for these cars. When the decision was made to add budget sleeping cars, the Budd order was supplemented by 22 existing heavyweight sleepers that CPR refurbished in its own Angus Shops, each fitted out with Budd-style stainless steel cladding. To complement the new rolling stock, the CPR ordered General Motors Diesel FP9 locomotives to supplement an existing fleet of FP7s. Although these F-units remained the preferred power for the train, it would occasionally pulled by a variety of motive power, including Montreal Locomotive Works FPA-2s.