Anti-Ratchet drivers on '11 Pro questions

[Kestrel2126]

So, I would like to go to anti ratchets on my '11 pro, as under boost, I have to run the track extremely tight. Additionally, I need a new track. I know I have read some stuff on here previously. If anyone could direct me to pertinent threads, or give first hand advice, I would greatly appreciate it.
From what I understand, the chaincase actually has to be modified, to accommodate AR drivers. If I am going to have to go to that length, I'm wondering if it may not be worth just buying the FTX extended chaincase, so that I can run the drivers as well as a taller track. Anyone with any first hand on the FTX install and how it worked out?
Thanks in advance

 

[philsummers21]

I have the modded chain case now. Would like to go to an avid extended chain case and belt drive with a possible 156 CE 3"

 

[SLDHVN]

i got avid drivers, didnt have to modify anything, call robbie at avid

 

[xmk1080]

It depends on what pitch track you are going to run. If you stick with 2.86p, 8 tooth drivers you will be fine but if you go to 3p 7 tooth drivers you will have to modify the chaincase because they are smaller in diameter and not clear the chaincase.