From 2 step or solo air to the new style Dual Position Air? Any good? do you just need the kit here?

if you go to SRAM tech you can get the full service manuals which will show all the parts that are different between the models. AFAIK same chassis different guts.

the picture in the tech doc makes no sense to me unless i have the parts in my hands lol!! Only reason i ask is that the solo air require a base plate and i am not sure if the DPA does also