Well I have just spent two and a half hours doing the worst job ever on 75 .
I have done most of the "Big " jobs on my car, Clutch, ABS sensor, Bottom front arms and Bushes etc. But this one was the worst.
Trying to re join the Heater Matrix pipes with those silly clamp things with out them leaking has took me two and a half hours and a foot well of antifreeze.
But in the end perseverance succeeded.
I now have heat on both sides of the car
(Sorry if this is not in perfect English)