Some in the UK changed the alternator pulley for a V.W. one. Allowed it to run from the front crank pulley with the waterpump. I didnt have a V.W. so left the alt to run from the rear pulley and be its own tensioner.
It means two belts but I made a plate to replace the PAS pump and turned up a spigot that I bolted to the plate to take the tensioner from the timing cover. This does the waterpump belt.

