Well use the BLM one then.
Not sure what's 'abandoned' about it, it works fine for me.
Or, do it by config. This will work if the car has three mirrors: a left-side mirror, a cockpit rear-view mirror, and a right-side mirror (0=left, 1=middle, 2=right)
The middle mirror has been bypassed:
Code:
;left hand wing mirror FOV
[REAL_MIRROR_0]
FOV = 45
;right hand wing mirror FOV
[REAL_MIRROR_2]
FOV = 45
FOV will now be set at 45 degrees for the two wing mirrors, all you need to do is adjust the angle of them to suit your head position using the CSP mirror app.
Edit the config and change the numbers accordingly if the car only has one wing mirror, or an additional dash monitor etc.
But TBH it's a lot easier just using the BLM app to do the whole thing.