If the strut is back an inch I'd be surprised if the LCA chassis mount wasn't damaged (the sheet it bolts to bends way before the LCA will), your best bet might be to take it to a suspension specialist and get it looked at so you have an idea of the damage. Also if I were replacing caster and radius bushes I'd be spending the extra bucks and doing both sides including ball joints and sway bar links or you might get a car that's hard to align well or flaps open on one side under heavy brakes. I just did both sides of mine with Nolathane and it's like a new car.
Some tips:
You'll definitely have to rip off the caliper, mount and rotor because they will get in the way of the ball joint bolt.
Getting the LCA shell out can be tough but I've found a special little chisel that makes light work of it without a vice.
You really want a 24, 30 and 19mm deep socket @ 1/2 inch with a breaker bar and some serviceable thread locker. These bolts are super tight.
Nolathane is a good replacement option because it doesn't require pressing.
This may help further:
https://forums.justcommodores.com.au/threads/howto-vrvs-caster-radius-z-bar-rod-bushes.57761