Machines that have been sat for that long tend to rust up internally with many years of moisture and no oil flow around things. They might require a bit of work to get going reliably, plus probably a new carb, lines, tank because the fuel will be well off by now. Also those tyres have probably started to perish too.
But still, Warriors are cool. I still remember mine - so much torque off the bottom end / mid range, and they make a great sound!