I do believe that using this cross member on the taskforce trucks and later is a real benefit as it can be made to bolt in easy without narrowing.
I've seen posts about using the '63 to '87 IFS on a Task Force truck, and while the track width works better, the frame is wider than the crossmember and its looks like a big project. The last one I remember the guy actually cut the frame off and built his own frame clip to mount the IFS.
My conclusion is that none of these modifications are actually easy!
