Torque Converter? Where am I at? What is compromised?

I run a PTC 9.5" that flashes to 3800-4000 rpm in my 505" '68 B-bod..drives great when cruising the kids to school or putting around town...but mash the gas and it's brutal, especially on a 3-2 downshift from a 35-40mph cruise. It's magnificent.
And, I might be in left field here so no offense is intended...but Hughes coverters are lame IMO, at least the ones I've used.
Give one of the reputed converter shops a call and tell them all your specs and desires, you won't regret it.