Yes, but you'll need something to move the dish and operate the servo(polarity control on the feed)The 4D can do this. It's also best to use the 4D to power the LNB with a constant 18-24v.(*) The FTA receivers use LNB voltage to select polarity. 13v=vertical, 18v=horizontal. (LNB's gennerally don't operate well with anything under 18v.) A new LNBF, and a G or V box added will allow all operation by the FTA receiver.
(*)A splitter with one port power blocking is usually necessary. Power pass to the 4D, block to FTA.