HDX will know what the BCFP trucks had in them for engine's when they left the factory . When I started working in the woods at Port Renfrew in Feb. 1966 the #203 , #212 , #222 , #223 , #224 , #225 had V8 Cummins in them . in 1969 - 1970 the #222 , #223 , #224 , #225 were repowered with V12 -Detroit Engines .