Gearbox codes

Here is a list of gearbox codes:
AA	1200	4.375	From chassis No 0 981 810
AB	1300	4.375	Up to 8/70
AC	1500	4.125	Also some 1300 from 8/70
AD	1200	4.375	Limited Slip Differential (LSD)
AE	1300	4.375	Limited Slip Differential (LSD)
AF	1500	4.125	LSD up to 8/70; also some 1300 from 8/70
AG	1200	4.375	Type 147 (Fridolin)
AH	1500	4.125	IRS suspension from 8/68
AH	1600	4.125	8/69-8/72
AK	1500	3.875	Type 181 Trekker up to 8/70
AK	1600	3.875	Type 181 Trekker from 8/70
AL	1500	3.875	Type 181 with LSD to 8/70
AL	1600	3.875	Type 181 with LSD from 8/70
AM	1300	4.375	Saloon and Cabrio from 8/70
AN	1600	3.875	Karmann Ghia IRS from 8/70
AO	1600	3.875	Karmann Ghia from 8/70
AP	1300	4.375	LSD from 8/70
AQ	1600	4.125	LSD 8/70-8/72
AR	1600	3.875	K-Ghia LSD from 8/70
AS	1600	3.875	Type 1 from 8/72
AT	1600	3.875	1303S and Cabrio from 8/72
AU	1600	3.875	Ditto with LSD
BA	1300	4.375	Semi-auto from 8/68-8/70
BA	1500	4.375	Semi-auto from 8/68-8/70
BC	1300	4.375	Ditto with LSD
BC	1500	4.375	Ditto with LSD
BE	1600	4.125	Semi-auto from 8/70-8/71
BF	1600	4.125	Ditto with LSD
BG	1300	4.125	K-Ghia semi-auto from 8/70
BH	1300	4.125	Ditto with LSD
BJ	1300	4.375	Semi-auto from 8/70
BK	1300	4.375	Ditto with LSD
DA	1500	4.125	Type 3 swing-axle to 8/68
DA	1600	4.125	Type 3 swing-axle to 8/68
DB	1500	4.125	Ditto with LSD
DB	1600	4.125	Ditto with LSD
DC	1500	4.125	Type 3 with IRS from 8/68
DC	1600	4.125	Type 3 with IRS from 8/68
DD	1500	4.125	Ditto with LSD
DD	1600	4.125	Ditto with LSD