Hi apfubar,
This photo shows the rails and the top of the tires. This is the first set of bolsters. In this photo I have the bolsters bolted to the inside of the rails, I plan on having notch milled in the rails and bolting the bolsters on the outside of the rails but in the same height location that they are here.
Also the two different Osswald kits made no difference in height because the the spring pack bolt in the same location in relation to the frame rails on both sets of bolsters. It does change the angle of the lower links however.