Hey John, have a look at the last page on this thread jhrusk has re and re'd his roof panel. Not that it looks "simple", but it does look simpler than the bbw swap. There is also a link in the first post on this page to Flips build thread (an amazing story if you have a weekend to read through it), and a link to more specifically his bbw swap.
Good to see you last night, thanks for the beer... that was beer right?
http://67-72chevytrucks.com/vboard/s...=522019&page=8