As far as power goes, the client isn't going to be happy until we have 327 with 300 - 325 HP, so I'm resigned to that. At least it will bolt up to the 700R4.
I've been in your shoes many times- - - -dealing with a demanding customer who has no idea what he's asking for, or if the resulting project is going to do what he wants it to do. Putting a hotrod V8 in a situation more suitable for a low RPM high torque inline six is a really good example of that kind of thinking. It seems your guy would be better off with a 292 with a few torque-improving modifications than any other option, but explaining the facts of life to a customer with his mind already made up is an exercise in futility!
Jerry