Maybe something from here that could be modified to suit ??
https://www.goodvibesracing.com/Belt_Pump_Drives.html
Type: Posts; User: trickycoupe
Maybe something from here that could be modified to suit ??
https://www.goodvibesracing.com/Belt_Pump_Drives.html
Try Techtonics Tuning in the USA.
Seem to be the go to place for water cooled VW stuff.