Which Hellcat do you have? Lado does make some rotating retracts but it looks like they are out of stock.
http://www.lado-tech.net/proddetail.php?prod=60-2
When will they get them back in stock? Who knows... They also have electric actuators that you could adapt to Robart retracts:
http://www.lado-tech.net/products.php?cat=7 Of course those appear to be out of stock too. If the Lado's take too long to get, check with Randy out at the field. I believe he had a CMP Hellcat if I remember correctly so he'll likely know what is out there.