In '82 emissions equipment was fairly simple, especially on pickups. Definitely an EGR valve, purge canister, catalytic converter(s). Depending on engine there may have been a smog pump but I am not certain about your application. Maybe you can find a salvage yard around that will have some old trucks still pretty much intact and compare?
Go to WWW.autozone.com
Yes, you can. You just need the proper equipment to do so.
Check the emissions label. Failing that (if not legible) you can get a new label from the parts department or get the specs out of SI.
EGR valve, purge valve, And maybe a air pump.
Yes
yes
Yes
Yes there the same.
yes it will, same thing.
It sure will, with no problems.
Yes it is the same thing.
Not unless the 1992 is 4x4.