No. Our shrouds don't fit factory rads. I wish they did. It is something we ought to consider, though I do know that one of the challenges that we ran into when trying it a few years ago was the length of the I6 and how close that came to the radiator, making the fitting of a singled centered electric fan pretty much impossible when used with a shroud - which we think is necessary.
There are a couple companies that appear to be making a twin fan version to get around this problem. See if you can assess those for your needs and get yourself back on the trail. Thanks!
Any other questions or observations on this, let us know.