That has to be a '99 or '00. Has the larger Sonoma headlights, which they switched to in '98. Those mirrors they switched to in '99. The '98s had the larger dumbo mirrors they they started putting on in '95. If it truly is a ZQ8 truck, it has the ZQ8 wheels they used up until '00. '01+ had a deeper dish 5 spoke wheel.
It beats me why someone would put a Syclone sticker on an Xtreme. Most people don't know what they are in he first place, so sticking on a sticker of a rare little know truck is not going to get the attention he is probably seeking. Maybe we can hope that he is doing/did a SyTy drivetrain/ swap.