Simple at home project.
You need:
four peices of 2x3/8" Steel 8" long
Drill, and bolt in place of OEM shackle. Use spacers (3 SAE washers) in place of bends. If you want more information I'll post it. I have part drawings if you need them.

Bigger tires? 33 might work, rubbing becomes an issue if you enter a steep driveway at an angle on a daily basis. I have 32's and trimed out the wheel well as much as neccisary to make that work, cant remeber if there is more room