I think Nick realized that, I've noticed some of his more recent dyno videos are of hairier stuff. Recently did a 600hp BBC iirc and an aftermarket cam comparison in a Pontiac 455.
Seems like his clients in Canada are more interested in stock-type builds for reliability and cruising as opposed to high-power builds for racing. Most of the cars in his shop are high-end restored muscle cars, not so much home-built hot rods or race machines.