I got my bits from Startech Enterprises at 9C Kellow Place, Manukau City, Auckland. They gave me the fuel diaphram and all the air lines that broke for $140. They have some really neat Merc's out the front as well.
Mine also has had the engine fan stuck to the front of the engine, but luckily its not welded! This weekend I'm having mine looked at by a sparky to see whether its the sensor or a relay, because my air conditioning fan is bust as well! It's bloody freezing driving to work when the temperature gauge shows 3 degrees and your heater consists of a big jumper!
I've also had some problems with idling and theres oil in my water, probably all due to my cracked head gasket. Hasn't stopped me driving it though!