Air Helper Bags / Lowered 66C10

[BCnNC]

Hello. Sorry if this question is redundant, I scoured the search subjects and didn't find anything (although that doesn't mean the info isn't there).

Anyway, I lowered my C10 2.5 spindles with 1" drop spring front and 4" drop springs rear (all from CPP). Looking to augment occasional heavy load capacity and leaning towards air helper springs from AirLift or Firestone. Has anyone done/used this? If so, what items did you use?

From my research it appears the bags require end relief (for the valve). How does this sync with the tapered springs? Are there different bag sizes that are best suited for these springs? The Airlift units all seem to be the same size at 10x13x6".

If no one has crossed this bridge before, I will and report my results (just checking before I reinvent the wheel, er, air bag - ha).

Many thanks!