Is this the link you saw?
http://67-72chevytrucks.com/vboard/s...rokee+steering
My truck is a 77 but I am using a 79 steering box(no reason in particular, this is just what I ended up with) It already has a flat spot on the splines that matches up to the Cherokee shaft. Your issues is going to be the 77 steering column unless yours has been switched out. The mating surface is a different size than a cherokee one. I am currently looking for a 78-83 steering column for mine. I guess if you wanted to weld the piece off your intermediate shaft onto the Cherokee one you wouldn't have to worry about it though.