Thank you all for your help. Unfortunately, I am still confused. Upon removing the engine from my '33 truck I found the rubber mount (3657520) and the lower retainer (368449) bolted underneath the frame crossmember. The plate (3657522) and the cover (3656502) were not present. According to Master Parts and Accessories Catalog only the rubber mount and lower retainer are applicable to my '33 year. What has me concerned is that the engine front cover plate has worn the frame crossmember at the mounting point. With the mount bolted from underneath, there does not seem to be enough clearance between the engine front cover plate and the frame. If the engine mount was mounted on top of the frame crossmember, sandwiched between the engine and crossmember, clearance would not be an issue. Any help with my '33 problem is appreciated.