BWE, sounds great! I'm sure that data exists alreadys somewhere, but like many things in time, it seems to be lost. I have the same questions about airflow. My two concerns are airflow for a front mounted radiator in front of the frame head, and the second is airflow for 2 intercoolers mounted in the fronts of widened rear fenders. If you go to
http://www.airkewld.com/project/index.php
and check out H2Oval, you'll see he's put intercoolers in the side. I'm really not sure if he's going to get the airflow there, and he's done a lot of cutting and welding, I hope it works out.
I'm planning the same type of IC setup, just with the intercoolers in the lower part of the front of the rear fenders.
Thoughts?
Jason