Found this thread looking for something else.
How did you make out with this? I did mine not seeing this post, and with mine I decided to open up the inside of the inner bearing and leave the spindle alone. I had the same issue with the spacing, but machine bushings to take up the gap and the only other thing was to use my map gas to heat up the bearing caps then elongate them to accommodate the 'longer' spindle. Also, my rotors were used and turned down a little to make room on the caliper side.
2017 NJMP #24 Team Super Grover, DNF, MF, WTF.........
2016 Thompson Motor Speedway #36 Sabrina Duncan's Revenge, IOE Trophy, 5th Place 'C' Class 1977 Ford Pinto
2009 Stafford Motor Speedway #16 Team Teflon, 11th Place (overall) 1997 Saturn SL2