I have Flextek arms and 3.3 shafts. The only thing I could find long enough. But it work fine and I love my setup. Just make sure you brace the rear of your front lower pins. There is a thread or 2 here showing the brace I made.

I dont think even the UE or MIP would work. These arms are longer than stocks wiether you run 2.5 or 3.3 knuckles.

And the steel u-joint sliders only lasted me about 5 runs, I had them for centers. They are junk. The pins wore out the metal fast and broke the outdrives.

The Flextek arms are great with a little modification, someone needs to make CVDs or Universals for them though. But Im sure there isnt a high enough demand.