Lower Ball Joint/Steering Arm Removal Advice Needed

Yep. Pickle fork at red arrow, tie rod remover at yellow arrow. The 72 UCA can't be used with the 75 spindle. Save yourself a lot of frustration if you're going to put a new UBJ in the new UCA and need to get the old one out first. Mount the UCA on the car then remove the UBJ. I have usually needed to use my 6' cheater bar on my breaker bar.

Be careful when installing a new UBJ to make sure it is not cross-threaded. You can start the install with the UCA off the car, but will need to install to torque to spec.

Besides cutting cotter pins off (don't even think about reusing them), it may go better to use KROIL or another effective rust penetrant. Good luck, be safe, and have fun.