If you're going to run a V8 I would stay away from the Toyota axles. They will work great until you stand on the throttle for a while. If you want to stay with a narrow width axle, look at the Scout Dana 44's. They're more narrow than the truck 44's.
I'm thinking about selling this truck to finish shop build. I have $5000 in it not counting the wheels and tires pictured. I have pulled those wheels/tires and put on brand new 15x8 steel rock crawler wheels with 31" mud terrain tires. It's a much more aggressive look. I'll post some pictures soon.