kmead
Old enough to know better
I thought everyone left the fans on, rolled a floor jack under the radiator support beam and just lowered the whole assembly with the jack.
As to replacing/repairing coolant pipes, probably a third of the posts on this forum deal with that misery! Typically, if those pipes are rusty then the steel heater pipe in there is rusty too. If you think your car has rusty pipes, better to start a new thread.
A bit of an exaggeration, there are a number of threads over the years. Some are more complete than others. The copper solution is one that has been done a number of times, plenty of debate about that approach due to the reduction in cross section. Then there is the replace them with the excellent stainless solution which is best done by taking the pan apart or twisting out the existing and sliding through only the straight section and rejoining them on the far end.
There is also the issue of the existing heater supply line which can also rot out, which if you replace it properly needs to be done by taking the pan off.
If you have the problem then its going to be a lot of work regardless.