From what I hear. A Yank converter is pretty tight when driving around normal, does not feel really loose, not until you hit the throttle hard, then, it will stall to what they set the stall to..
Since you can give them your dyno numbers, weight of truck, gearing etc, it will not be a guessing game they (Yank) can custom make the converter for your application.
I would give them a call & see what they have to offer you & ask how there converters feel on the street.
F.A.Q.
http://www.converter.cc/FAQ_s/45.htmMBHD
