pad replacement on my 100 quattro

[Gordy_Schesel at allianzlife.com]

I'm working my way up to a level of mechanical ability and know-how to be
able to do more and more maintenance on both my Audis.  I expect  this is
going to be a long process.  Years!  Assuming long life remaining in terms
of mileage capability of our Audis.

I need to replace the pads on my 100 quattro.  On Monday. a lister posted
info on the Lisle brake caliper tool.  Is this a 'must have' to do the pad
replacement, and will I need any other special tools?

TIA
gordy   (saint paul)
'91 200 20v tq avant, pearlescent white, 103k miles
'91 100 10v quattro, sedan, bamboo, 193k miles (my daily commuter car)