The kit supplied 427 bottom end, then I bought the carbs from FAB resin, and the valve covers from Speed City Resin. The heads are cut down hemi heads from my parts bin. The rear of the heads are hollowed out, but the firewall blocks where I cut them. The M/T covers were a bit shorter maybe because they were for the 392?? The intake is a hemi part that I sanded to fit. The engine bay had the shock towers removed, and replaced with evergreen sheet styrene.