76 Chev Dually Suspension Choices

^ yes
and try to mount the valves as close to the bag as possible
and my truck has 2.5" drop spindles and bags

OK so you're a "Buzz Kill"... As a Professional Truck Driver I agree that one should 1. Be safe 2. be legal and use the correct equipment for the job.
I am eventually going to be doing front airbags and in the rear bigger helper bags than the current slamair pos that I have now. However I will only tow at approximately 80% of legal GVW, anymore and I will break out the Semi... Oh yeah...my pet peeve "Hang up the phone and pay attention"

Would it be safe to say that if you use too large of a diameter air bag, you will have a spongy soft suspension, or a taller hard one?

I'm thinking that more area (larger size) would make it run at a lower air pressure for any given ride height. Anyone have any experience with this? How big of a bag is too big.

I'm thinking RE7's in the front and the Slam Specialties XS7's or HE 8's in the back.

Now just to decide on a 4 Link style and make it all happen.

Consider this:

12,000 lb trailer
+ 6,500 lb truck
----------------
18,500 lb actual GCVW
- 16,500 allowable GCVW
--------------------------
2,000 lbs overweight

You would be overweight by a solid ton.

Forget about the legality of all, take it from someone

So are you a KillJoy on everyone who has "Shaved" 19, 22, or 24's?

Just a question. Unless perhaps the strength of a shaved alcoa rim has been approved by an engineer.

My real question is as to what guys mean when they say 2-Links

Are they actually talking about Ladder Bars?



Edit: I understand why ladder bars are less desirable.

I would say a 2-link is a type of ladder bar, or vice-versa. When I ran one on my burb it was just a 2 1/4" square tube(that's what size the leaf springs are). I mounted a bushing on the front and axle cradle in the rear. I just used the leaf spring mount in the front, although I did move it forward.