Take a look at these:
http://www.e-fliterc.com/Products/De...ProdID=EFL2200
http://www.e-fliterc.com/Products/De...ProdID=EFL6000
They are not RTF, but they have a plug n' play version.
This is an RTF, but I highly recommend going with your own aftermarket electronics:
http://www.parkflyers.com/html/cessna_182.html