Here's a little closure to this thread for those that come across this thread when searching for info on rotor pack swapping. I finally finished the swap. I say finally, b/c when I got into my SC I realized that I should replace the coupler. I was moved to do this b/c the gearshaft had wear grooves in it from the spring in the OEM coupler. After some research, I opted to install the moly-filled coupler from 'Texasthunderbirds.com' (thanks again Wynn!). Attached are a few pics. The red sealant on the flange is anerobic gasket maker Permatex item #51813 (replaces Loctite 518). Flange bolts torqued to 25 ft/lbs. Thanks to all who helped make this project a success. Rotor pack looks and feels (no play) great.