Dragonheartcasiano like any frame. It will never be as strong as it was before. Any local aluminum welder should be able to do it.. you may have to move any and all wires that are in the area prior to bringing it to them.
If all else fails…go to the local college welding department when class gets out. There are qualified and will do it for fun. lol or $20
Oh if the crack goes through to the bottom… consider a steel skid plate being bolted on before sealing it up