TC recommendation A999 (non lock up)

Hi,

after finishing my 73 Duster I went out for some tuning.
But the third run caused serious problems.
After laying some incredible long patches, the transmission failed.
The A999 was the only thing, I didn't rebuilt, because the seller told me it has done shortly before.

I have a guy here who will build it to hold the power of the warmed 360.

The reason I'm posting this is because there is a terrible wrong and weak converter installed.
It's a CR8H - nearly stock TC - first the stall speed was somewhere 2400RPM, after the third run (changed jets on the carb) the stall speed rised to about 4000RPM....
Anyway, I will change the converter.
The car is driven mostly on the street, but sometimes on the quarter mile and I don't want it to be a dog from the line.

I am thinking of a Hughes 27/25 HD street strip or a 27/30 pro street.....

So what do you as experts recommend?

Specs of the Duster are:
360 engine, 0.030 bored over
speed pro pistons
292 comp cam (244,244 @0.05 - 292/292 duration), roller rockers
polished and ported heads
edelbrock air gap PRM
msd didgital 6AL2 igniton
Quick fues 750 SS AN
long tube headders, 2,5" dual exhaust
3.55 rear end in a 8 3/4 axle
Big cooler, twin derale fans
etc.

1973 Duster restauration and upcoming project 1966 Dodge PolaraIMG_20200404_151505.jpg EB.PG.jpg