what about WME exam papers?
https://www.dropbox.com/sh/ru8aqqr2zfd5iei/AABjcZq6hu-I1oloRAuO4eTla/2022%20Western%20Mathematics%20Exams/WME%202022%20HSC%20Mathematics%20Extension%202?dl=0&preview=WME+Mathematics+Extension+2+Trial+HSC+Exam+2022.docx&subfolder_nav_tracking=1