Hi Kieran, welcome to Outdoorking.
If the damage to that bent axle is slight and is completely outboard of the bearing, not inboard of it, you may be able to straighten it successfully given enough time and enthusiasm, plus a hydraulic press, some V blocks, and a dial indicator. Of course if you can find a straight axle shaft that fits, even better.
Please remember to take before, during, and after photos - they are an enormous help when you are describing what is going on, and we all like to see them. And be careful not to increase the engine power beyond the capacity of the rest of the powertrain - you'll just make yourself unhappy when everything keeps breaking.
