Rear Bag Placement and 4 link?

[Sharpie]

Hey Guys,

I'm doing a body drop on my 1967 C10 and was wondering about airbag placement on the rear end of the truck. I've seen it a couple different ways (Bag on axle, bag on bar, cantilever ect.) and was wondering which is best? Also should I go with a parallel 4 link? Pictures, links and products are all greatly appreciated. Oh by the way I plan to be laying the frame down on some 22" rims.

Thanks a lot guys,

Sharpie