You weren't clear, did you want to stay with the small 5x4 bolt circle, or switch to the larger 5x4.5?
If you're going to the 5x4.5, there are LOTS of options.
-Explorer 8.8, with limited slip and discs.
8.8 swap
-Pre '70 B body 8.75, no narrowing required, just use wheels with more backspace-...