Powertrax No Slip for Dana 35 IFS
These are better mannered than the lock-right type lockers, so they should be a bit easier on the front CVs. Check around, the price is good, about half of what summit racing charges for them. I have no idea about the seller, but I can't use it myself and thought I'd pass it along.
And before I get any of the "that won't work" replies, I've already called Richmond Gear and it will work on all Ranger Dana 35 front axles (TTB and IFS). Check out the Differrential Guide
for more info.