Yes they are Erik.
So, for the engine, I wanted something with power, that would sound fierce, but also looks good and keeps a good balance between traditional and modern. So I Took the kit's engine block and transmission, with the finned valve covers. I replaced the blower with the one that came in the Rat Roaster. The oil pan came from the engine in Boyd's Smoothster. Everything was dechromed and will be painted the same color. No chrome here. The reason why these choices were made is fitment. I want a full engine bay, but everything to neatly tuck in behind all the hoods. Which is the reason for the drastically shortened alternator bracket too. The oil pan was a necessity, as the original one was hanging way too low beneath the frame rails.