Arnott A-2220 Air Spring

Is the upper retainer included?

Do the A2220 come with the aluminum base, or is that just the picture ?

If install a2220 hd bags in a reg sedan not limo cause a stiff ride?should i have installed non limo instead? for softer ride?

With purchase of arnot a2220 with metal base, does complete set of o-rings and install clips come with, or can i purchase seperately?