[chittychittybangbang]

It is very similar to this:

http://www.myturbodiesel.com/1000q_how_to/a3b4/injpumpswap.htm

the above link is a pump removal on a mk3 TDI. The difference is that you do not remove or touch the middle nut that holds the pump hub since there's no way to index the hub to the pump.

Just remove the timing belt and fuel hard lines. There are 3 bolts in front and 1 in the rear and the electrical plug, the pump should come right out.

 

[chittychittybangbang]

There is no such tool and you would still need to lock down the camshaft to reset the tensioner and pump sprockets. What you suggest would be nice but it's just not possible to keep the extremely precise timing and keep the tensioner even.

A 17mm flare nut wrench would be nice for removing the fuel lines, and a torque wrench are the only special tools that I can think of, other than the timing belt tools.