Engine heater

[LGREGF@aol.com]

I am planning to replace my 1987 5KSQ with a newer model and trying to 
determine whether anyone makes an engine block heater for the A6's (local 
dealer didn't know).  This is a device that plugs into household current when 
the car is parked and keeps the engine coolant temperature up.   I spend a 
lot of time in Vermont during the winter and would like to install a block 
heater to keep the engine warm....much easier on start-ups during those -20F 
nights plus quicker warm-up.  Thanks.