I have a 88gxl, needs new tires and wheels. Cant find the right specs on what the bolt pattern and offset needed for 9in tires and proly stickin with 16s or 17s. If someone could help id greatly appreciate it.

 

Tire widths are in mm (ie a 225 would be ~8.9"). Is that what you mean? You'd need a rim with at least 7.5" width and 5x114.3 bolt pattern. Offset depends on wheel width, tire width, fender/spring clearance & personal preference.