maintechfotog.... Good News!!! I'd like to add that Banks Engineering has "Bundles & Packs" that are well tuned for the Ford 7.3L. The list is long, for example, tuner, turbo and intercooler improvements, exhaust pipes, gauges, exhaust brakes, tranny improvements, power selector... Here's the link:
http://www.bankspower.com/
Where I live there are Ford dealers that offer them for install. Expect to pay a pretty penny, but you will grin ear to ear the first time you press the accelerator, then screech to a halt! Like others mention look for other diesel improvement products and installers on the internet for your area.
I hope you can find an installer in Canada. If I find anything I will drop you a line.
On edit: Try this link at Banks web site to locate a dealer:
http://www.bankspower.com/contact/dealers