I run a Nitto drag radial and in 2wd thay make a huge difference. M&H has a big drag radial that uses a 17 x 12 wheel that I heard hooks very well also. If you want a bad a$$ traction bar get in touch with Caltrac's and have them make you some(about $400) They work awsome on the street and at the track. You better get a Detroit locker or a true-trac to make it all work together.
Here is a link to Caltrac
Calvert Racing, home of CalTracs, "The Bar With The Bite"
Here is a few pics of mine