Cheap cus it's not worth much, none of the D3/D4s are really. At thier age now any one of them you buy could be about to drop a 4 figure repair bill in your lap without warning, no matter how well it's been maintained. Or worse it could write...
Remove rad top bung
Remove bung on top of stat
Fill coolant tank until fluid comes out of rad bung
Refit rad bung
Keep filling header tank until you are at correct level
Refit header tank cap
Carry on filling coolant through the stat bung until...