Probably not enough for you, but, the online parts manual has the following. Specific details are missing since they weren't necessarily published or tracked:
S1 prior to chassis number 480
No. of Coils 15 (measured from 460355)
Diameter, outside 6.6cm (2.59375")
?
S1/S2 fom chassis number 480 to 2383
No. of Coils 14 ?
Diameter, outside 4.8cm (1.875")?
?
S2 after chassis number 2584 to September 1971
No. of Coils 17
Wire diameter 8.83mm (0.348”)
Length, free 32.38cm (12.75”)
Length, fitted 19.68cm (7.75”)
Rate 1.15kg.m (100 lbs.in)
Load, fitted 227.3kg (500 lbs)
Diameter, outside 6.4cm (2.5")
S2 after September, 1971
No. of Coils 14.75
Wire diameter 10.16mm (0.400")
Length, free 34.90cm (13.75")
Length, fitted ?.??"
Rate
lbs/in
Load, fitted
lbs
TC/TCS
No. of Coils 13.5
Wire diameter 10.16mm (0.4”)
Length, free 31.77cm (12.51”)
Length, fitted 20.01cm (7.88”)
Rate 1.33kg.m (116 lbs.in)
Load, fitted 224.5kg (537.08 lbs)