Haven't checked your thread in a while. A couple months ago you said you might be looking for a longer front spline on the D/S.
Joint Fuji makes the same slip assembly in an 8" travel . The 80 series is typically about 6", The kit comes with everything to replace the
slip side. The tube diameter is the same for all cruisers, 40,60, 80, etc. The high angle flanges should be the same. The kit is
part # FTL-35050x.
AllPro sells them but I believe Georg and Kurt have access also. The US distributor is All Automotive Import Export.
The big advantage of these as you know is the increase in u-joint articulation. Stock is about 24~27 degrees. This u-joint , found in the front shafts or the 80 series, Toyota Tacomas and other newer Toyotas has 45 degrees of angle before bind.
The truck looks awesome. Great job