I'm assuming now, that you're looking at local pickup of a 4' dish from SatelliteAV?
Yes, they offer a big bracket that takes a C-band LNBF. (but it's optional)
Doesn't sound like a 4' dish will get you the stations on C-band that you want, but...
You could use the CK-1 LNBF from SatelliteAV or from Sadoun. (it's the same product)
Or, the DMX-741 from WSI would be a good alternate. - :up
Both do C- and Ku-band.
Or, there are other good C-only options, including LNBFs from all three of the above vendors.
You'll need to buy the conical scalar from Sadoun or WSI. (it's the same one)
And as I said, you'd want the DG380 motor from Sadoun.
Links to all three of these Gold Sponsors are at the top of each page in the forum.
edit:
And read up on the forum, looking for others who have that dish, scalar, LNBF, and see what they've reported.