As long as the box doesn't leak, the engine runs without a CEL, the brakes a decent, and the steering tight, I don't care about much else.
I can stuff a LOT of solar on top of a 17", and it's a lot of extra storage.
Discussion
They stopped making 17" trucks for 20" so go with at 15" a few years ago fyi…
They were starting to remove the boxes from all trucks larger then the 10" so they could reuse em on new trucks or to be used for new storage units…
Most of the trucks go up for sale in pretty good condition…