I say no to the Jalousies...remember it's all about the look not the comfort 
True, this is the way I went...
Although... if you have actually driven a bay on a hot, hot August afternoon, sitting in traffic (or on a long trip possibly driving down to the CLASSIC 2005/return!?) with person on the rear seat--next to the engine/sub/amp!!! ,
It gets nastingly hot fast.. with no air flow!!!
Consider your priorities! Is the bus for you and the passanger next to you, will you be transporting friends around etc
Consider sliders or vents. Since yours is a 76 sliders might look more appropriately.
For mine since it is a 72 Deluxe and came with vents... (see pics)
I'm going from having 4 straight tinted glass to venting 3 of the four next summer for comfort
Its costly because of the seals, but for me looks better than jalousies.
I will be using it to transport kids, people and pets as it is will be set up for comfort...
Check out the Samba/Gallery to get some ideas!!
My two cents!!
