What motor to go with?

you need to watch out went going to 360 heads...the larger combustion chamber will kill the compression on the 318....

if you are doing a rebuild on the 318...you might want to look at KB pistons that will up the compression with the larger chambers...

if funds allow..,..a set of RHS heads or EQ heads with small chambers and better flow then stock 360 heads would be a big plus