A B C E Which housing?

You can get some serious tire in your rear wheel well now that you have mini-tubbed, spring relocated and pounded out the lip. How much bigger do you want to go? Search the wheel and tire forum and you will find out the tire sizes people are able to run. You should easily be able to run a 12" section width and at least 28" tall tire with your current set-up, likely bigger. Good luck.