How to AWD Mk2 (Jetta, Golf, Scirocco, Corrado)

Answering question about how to build/convert Vw Golf, Jetta, Corrado to AWD (4Motion, Quattro) by looking at the difference between a fwd and a awd Jetta mk2. Most, if not all of this will also apply to Golf and Corrado.
LINKS and INFO:
-Syncro subframe to chassis bracket, parts number: 191505129 (nr 5 in the picture in the video)
-GDF makes new version of this bracket: www.gdfsteelworks.co.uk/shop/...
- Epytec Syncro to 4Motion Weld-on's:
epytec.de/en/engine-and-gears...
-A blog with a lot of pictures about Syncro to 4Motion conversion:
www.20vt.lt/index.php/how-to/...
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00:00 The question
00:43 Mk2 Chassis
01:38 Fwd and Awd Mk2 Jetta
02:13 Awd Tunnel
03:18 Fwd Tunnel
05:00 Awd Rear Subframe
05:38 Syncro Awd Subframe Mounts
06:39 Syncro to 4Motion / Quattro
07:09 Awd Gearbox
07:42 Fwd to Awd tunnel mods
08:41 For sale
09:40 Links to parts you will need

[@MrPaulopp]

Hello! Will the mk3 syncro subframe just bolt on? Or the mk4, or does it need a lot of mount welding and fabrication like it does on the mk1?

[@Gateslicks]

The Mk3 Syncro subframe will bolt on. But not the Mk4. The Mk4 will require a lot of fabrication

[@MrPaulopp]

@@Gateslicks i'm sorry to bother you like this, but what about the ECU situation on a 4motion swap? Can i just use a normal 1.8T ecu or is there a specific ECU to use in the 4motion case?