TL;DR: I. A search of ‘SAT to IQ’ on google results in being presented with the website ‘iqcomaprisonsite.com’, which uses this table: This man has directly converted the SAT percentiles to IQ scores, which is not what should be done. Tests like the ACT and SAT correlate with IQ at about 0.8-0.85
Could this table be made available somewhere in tabular or textual format?
You might have used the wrong ACT-SAT conversion, because 29 ACT, for example, predicts around 1340 on the SAT according to the ACT official site, whereas you have 1370.