It is a '67.
IF you all ready have a 408 bottom, then an additional $3500 would be awesome! IF you only have $3500, you may need to save a bit more. Shop around and pay close attention to what is and what is NOT included with the kit.
Your going to find the Chryslers a little more expensive than the Fords.
The crank MAY accept the manual trans input shaft. Tell it to the machinist that you will be issuing a manual transmission. Then the appropriate steps will be taken to make sure things happen.
My machinist always asks me because I have both transmissions in the stable. He knows my stable a bit.
The front of the 318 can donate everything. But not the damper or oil pan. You should purchase a top quality damper instead. Internally balance the 408. The stock 318 is internally balanced. You can reuse the flywheel.