I have seen a few threads here on installing an electric puller fan to replace the clutch fan. I have just done this on the 5.0 SLC and thought I'd share the build process for reference.
Here, I used an electric fan and shroud from a 1995 Volvo 940. It is a perfect fit on the car using a later alloy radiator from a 560SL; with some slightly different mounting techniques this should also fit on the earlier 107 cars just fine.
Cost for parts, less than $75.
Part 1 - install
https://slc4dirt.wordpress.com/about/building-the-beast-part-3/electric-cooling-fan-part-1/
Part 2 - connection
https://slc4dirt.wordpress.com/about/building-the-beast-part-3/electric-cooling-fan-part-2/
Here, I used an electric fan and shroud from a 1995 Volvo 940. It is a perfect fit on the car using a later alloy radiator from a 560SL; with some slightly different mounting techniques this should also fit on the earlier 107 cars just fine.
Cost for parts, less than $75.
Part 1 - install
https://slc4dirt.wordpress.com/about/building-the-beast-part-3/electric-cooling-fan-part-1/
Part 2 - connection
https://slc4dirt.wordpress.com/about/building-the-beast-part-3/electric-cooling-fan-part-2/