Which Converter?

[68racer]

I run a 1968 C10 with a 502/502 crate motor thru a TH400. I am getting the gearbox rebuilt and need a new converter. I bracket race it (11.7's) and drive on the street. I am always changing things on the truck, I want to swap in a solid roller cam next. Do I get an off the shelf converter such as a Hughes HD35 or go the custom route? I understand a custom is better but more money. Is there an off the shelf converter that is definately strong enough to cope with 11's and maybe 10's? Any recommendations or don'ts?