Here's a link to the website where you can find most gol manuals.

Mechanics Manual G1 G2 G3 G4 - same engine block 1.6 and 1.8 - that being said, the 2.0 is different, bigger distributor hole, more space for the rods to turn, and the head gasked guide pin is moved.

AP1600 (This one also has the 1.6Diesel version manual, and 1.6 1.8 2.0 gas engines)

I understand they are not in english but I think any of you can manage to understand the schematics and torque specs. I hope this is helpfull for someone out there.

This website also has information for DKW, Golf/Jetta, Bettle, Passat, Quantum, SP1, SP2, Karmann ghia's, etc.

Gol GTS Owners manual

Gen 3 Owners Manual