Well, I can highly recommend
@ClaudioWRC74 ’s
SuperGT championship presets, but suggest tweaking the cars (to include your favourite(s)), and possibly the circuits to the best versions (Sportsland Sugo has had a better version released since the championship was developed, for example). Great fun, and I only just discovered the championship aspect of CM, which adds a whole new dimension to AC.
On a related note I think I have previously mentioned the 2021 Lancer GT500 (available via FaceBook or
@FileMissing ’s Discord) - similar performance to the others, but in what I find to be a more brutal way (although the later revisions have been more refined).