I could have sworn I had once seen an extended bumpstop that would help limit the up-travel on my IFS, but I can't find it now. Maybe I am drugs??? I overflexed my driver's side axle a while back, I think on a RTI ramb, and ripped the boot open. Don't really want to do that again, so I would like to control the up travel a little.

 

NWOR offers a couple of flavors of IFS bumpstops. You might be able to make one of them work.