Aircon + Extractors, Larger alternator pulley part no.?

[CMF_DeepFraught]

Wondering if anyone who has:
- aircon (high mount alternator)
- extractors
- with alternator mounting spacer
- and used a longer alternator drive belt
knows what belt is needed for the extra length?

 

[CMF_frank2]

deepfraught

according to the autodata cd, the belts are.
non a/c.. 21, 4 x 680
a/c.. 21, 4 x 955

frank

 

[CMF_DeepFraught]

Thanks Frank, I'm guessing that is millimetres of
-width
-thickness
-circumference?

So if the a/c alternator is already as long as it gets, I hope someone has already found the one from some other model that suits, otherwise guess extra and try the pi x radius scenarios for the extension and traul the parts books if they list measurements.