The level and question style won't match perfectly, but you could still benefit from using English/Welsh GCSE/AS/A-Level past papers:
GCSE for example available here. The GCSE grade system switched in 2016 (from A*–E to 9–1), so you will find that papers before the change are structured differently but at a similar level.
The paper you want is the Language paper (on the page I linked, you can find one under 'Sample Assessment Materials', many under 'Withdrawn Qualification Materials', and another under 'Question papers, markschemes and reports > 2018').
AS/A-Level for example available here. AS is a lower qualification than A-Level, although I don't know how the differences manifest at the level of prose comprehension. The AS paper you want is the Language paper; the A-Level paper you want is 'Prose composition or comprehension'.
(The connection between AS and A-Levels has changed in the last few years; previously students typically took AS exams after one year and A2/A-Level exams after a second year which would combine to form an A-Level qualification. Now the A-Level is a continuous two-year course, with the AS an independent course of roughly half the volume.)
You could always use the passages and make your own questions if the style isn't quite right. I'd be interested to hear how the level compares between the SAT and these qualifications.