Best next upgrade?

4spdragtop said

Sounds like PO and you have done quite a bit, all the while that 7 1/4 remains??
Hands down a better rear end.
You want to spend more money to break it?

Click to expand...

I guess the notion of a 'weak' 7-1/4 has been a little vague for me. I get that a built 410 stroker with slicks will eat it for lunch, but will a moderately built 318 with radials ever take it out? It's not clear and this is my first Mopar, so i ask the advice of the board :)
I'm on the prowl for 8-1/4 or 8-3/4 locally now, but it looks like it will take some patience to find a good deal...