[Gmecm] 4L80e/4L60e

[Rexdina at aol.com]

Does anyone know for sure if the 4L80e wiring receptacle and plug  would 
interchange with that for a 4L60e?
 I have a '94 GMC van that I'd like to change from the factory 4L60e  trans. 
to a '94 4L80e GMC van trans. for towing purposes. 
  If that isn't possible, what about a stand alone controller for the  4L80e, 
and how would I disable the inputs from the 4L60e to the ECM?
  Thanks, and I realize this may be the wrong forum to ask these  questions. 
In that case, does anyone know of a good GM transmission forum?
Harry