I'm going through the same thing. I just started doing 3D type stuff, and I don't like the slow response on the HDE system. I went the expensive route and bought the SE Frame though rather than the Re-fit kit. My plastic frame is cracked anyway.

Check out www.techmodelproducts.com. Joe has some pretty good prices and great customer service. Not to mention 10% military discount and free APO shipping. He carries pretty much anything you need for the Rex including the CCPM re-fit kit for about $19. I think the kit comes with all the required linkages also.

I'm not sure, but I believe you'll also need a 120* swashplate. I don't believe CCPM can work on the 90* swash. Research befor you buy though.

Also in reference to the radio question from waveshark... I fly the Eclipse 7, and I love it. The spektra module is great if you get multiple models and can't get crystals in the same freq. Just dial in the channel and go. There's alot of buzz right now about the DX-6/7 Spektrums, but from what I've seen I'm not crazy about them. Gain adjustment for the tail in particular is a serious negative for me. I like being able to fine tune everything, including gain, for each individual flight mode rather than having HH off/on only.