The M13A engine is in the supplement, the G13BB engine is in the main manual.
ECU repairs, modifications and diagnostic interfaces for OBD1 Suzukis:
2006 Jimny, 1.3 VVT, stock
2000 Vitara 1.6 8V, Calmini 3+3, 33 MTs, 5:83R&Ps, remapped ECU
1986 SJ413K pick-up with G16B conversion