In need of some rear air bag help!

[amullis]

OK guys I have looked at several post about rear bags and have not found exactly what I am looking for. I have a 68 swb fleet that i have put an ECE 4.5/6 drop on. The truck is not on the road yet but my goal is to drive it to Myrtle Beach for the Run To The Sun show in March. Keeping my fingers crossed on that one!!! Any way, I did not put a C-Notch in with the 6" rear drop and now, after looking at the truck I would like for it to have a little more rake. It sits almost perfectly level now. The next thing is that I would like to be able to use it for a small amount of towing and thought that air bags in the rear would help me keep the ride height where it needs to be. My question is what bags, if any will bolt in, give me about a 5-6 inch drop and will support the weight of a trailer for towing?

Suggestions with pics would be great!!!