Here is my solution to belt routing on a 455 engine. I have this set up running in a custom 1948 Buick Convertible. I followed the earlier posts similar to Weekender's Phase III. I had several changes to make because I did NOT want the belt running uncovered for such a long run from the crank pulley up to the A/C unit. I used the same number of idler pulleys, just chose a different routing pattern.
So did you guys ever finish your setups? Would love to see Photos of the finished products and the differences between the different setups.