all depends on what exactly it needs. most everything will only be available used. but many things are the same (near-as-makes-no-difference) as XJs so there are parts out there.
remember, not matter what you do, there will always be a weakest link. the question is whether or not it's weak enough to ever be an issue. most people break something else first. ujoints for example.
do you have a printer?
this is the best place for the window sticker since it's for this exact truck but there's also a place in the Pub where you can add photos of Comanche literature.