New carb and distributor

It's hard to decipher what you wrote.Your opening statement is just too muddy.
"I set the carb with a wide band and its 15 to mid 14 at idle and perfect at cruise and WOT. At WOT at 5800 it breaks up and is done pulling. what would your money be on Dist or carb?"

That is to say; did you set the A/F to be perfect at WOT?.
Or do you interpret 15/14 to be this perfect number for WOT?
When it breaks up, does it just go flat and nothing you do will get it to rev any higher?
Or will it in fact rev higher, just run like crap up there?
See what I mean?
But I'll try;
Your issue is likely one of four things. rev limiter,Valve springs, lean running ,or spark failure.

1)With soft or mismatched springs, the revs go flat in every gear nearly the same.It just revs so high and that's that
2a)When a high rpm miss shows up, not as above,it could be either fuel or spark.
2b)With fuel it gets worse in each successive gear and is principally load related.
2c)With spark it is usually rpm related, but may not just flat quit like valve springs.

But there is considerable overlap of symptoms between fuel and spark.
A high-rpm miss is often load dependant, and controllable with the throttle setting ie if it breaks up at 5800 under full load(say 3rd gear) and WOT, but revs through it ok by backing off the throttle.This is often traceable to;lean running,weak coil or fried plugs.Since it seems possible to interpret your opening statement that you are attempting to run a WOT A/F of 15/14;later amended to 13/12, it seems quite likely, as others have stated, a lean issue.
You may find that after fattening it up, it still has issues, although less severe. In which case a fresh set of plugs would be my next go-to.And finally the coil.
Did I mention Rev-limiter?lol