Audi: 93 Audi 100S Fuel Pump Replacement (how hard?)

My 100 needs a fuel pump. The relay is good.
I was going to change it out myself, but my shop tells me that a
special tool is required to do this. Can I change the pump by
suffering through crawling around in the trunk?
Is the tool only a convenience to help deal with the poor access or is
the tool manditory?.
I would like to take the car into the shop (it is really cold out),
but it's parked in a poor place in my very steep driveway. I think it
will be harder to get it towed than to fix it myself. Any shared
experiences will be appreciated.

Mike

Thanks Tom, That's what I was looking for. I'll tackle it myself,
although this single digit temerature promises to make it a real
treat.

Mike

"Tom Amundsen" <net> wrote in message news:<com>...