Advice on which FBL head to go with

[cannondale1974]

I'm converting my T-Rex 600 nitro pro to FBL. Looks like there are a couple ways to go but not sure which is "best." Looking at these two kits:
http://www.lowerheli.com/servlet/the-2412/H60H003XX-600FL-Flybarless-Rotor/Detail


http://www.lowerheli.com/servlet/the-933/H60239A-600DFC-Main-Rotor/Detail


Can I use my existing swashplate with these? Also, I believe I'll need a new feathering shaft and blade grips. Would you go with these blade grips?
http://www.lowerheli.com/servlet/the-675/H60204-600PRO-Metal-Main/Detail)

Thanks guys.

[Rob43]

Can't beat Align's value and price point. Many models are so expensive to convert, it's not worth it. But the 600N is a great one. Sorry I can't answer the question, but I like the swash driver style myself.

That said, I'd probably go with KDE for the upgrade. I have the SXT edition in my 700N, and it's excellent. Premium design and quality. You would not be sorry. Yo

You can check with Patrick and KDE to see if you can simply replace the grip arms on your grips with his. Otherwise, you might need the black ones you linked. If I were upgrading, I'd also go with his thrusted main bearings too, and ditch the mast collar. No more making sure it's staying tight and needing to retighten it occasionally, and the bearings are designed to take the abuse.