I found a rollbar near me that I'm looking to get. It's from an 84 toyota pickup. Will that fit my 89 pickup? And for future reference, will most shells/toppers from an 84 pickup fit an 89?

 

It should, see if the owner will let u set it in your bed to check, I've got one that was made for a chevy that if I'd shorten it up a bit and narrow it a bit then it would fit, and of cours redo the kickers, but back on topic, with my experience with rollbars most small truck rollbars are interchangable, and if it's not, and the price is right then redo it a bit.