Converter is fine. I don't really notice a lack of drivability at all. Our BA is certainly smoother but it's also gutless off the line (absolutley gutless, IMO...any suggestions?).
The ute is tractable at low speeds and if you want to lauch her or fry the tires she will oblige as best a ute with hard compound tires can
Like i said drop me a pm and we'll have a drink over a comparrison.
I certainly wouldn't go a B303 over my 2031. Been in windsors with both and enjoy mine better. Besides your heads if ported or after market would probably enjoy that little extra lift.