In my never ending research to decide the appropriate engine setup for the 318 car, I found a company here in Seattle that produces custom made engine mount kits to fit a 360 (requires a different left side mount), 383, and 440 engines. The mounting brackets are designed to fit the existing 318 K member. They come with new rubber isolation pads and bolts for the engine.
The 440 kit is $120. They also sell trans mount hardware.
Just thought I'd share... if interested I can send contact info.
Wade