Torque Converter Questionnaire/Laundry List

they'll ask the usual engine stuff: cam specs, compression, induction/exhaust
then they'll ask all the drivetrain stuff: trans (obviously), gear ratio, tire height, weight
if they don't ask you how you're going to use it, then i'd go with somebody else.

it's imperative that you're honest with them about the specs on the engine and the current drive train set up as well as how you are going to use the car. spec for a street/strip unit is very different for full race or something that you intend to put some mileage on.