This might be old news but after installing a OME 850s and 860s with no caster correction I decided to measure the driveshaft and pinion flange angles to check u-joint alignment. It seems those Toyota engineers knew what they were doing, even raised 3 inches the u-joints maintain nearly perfect working angles. Driving at freeways speeds confirms the findings, no vibration at all. Now the question is, whats more important to me, correcting the caster or maintaining proper working angles, the way I see it is that without a DC driveshaft you can't have both.