I haven't yet watched that specific video but one thing I do know... fabbing the hot-side plumbing to have the least restriction possible (headers, mandrel-bent tubing etc) so that the pressure ratio between the intake and exhaust sides is as close to 1:1 as possible is ideal, then you can run any cam you want for your preferred powerband. "Turbo" cams are only useful when the hot-side (exhaust) pressure is higher than the cold-side (intake) because too much overlap will allow hot exhaust back into the cylinders which pre-heats the intake charge and causes massive detonation and heat buildup. This is why old-school turbo engines (like from the 1980s) had compression ratios in the toilet and cams with basically no overlap, they intentionally used turbos with undersized turbines and restrictive manifolding to make the boost come on at a lower RPM. With modern turbo technology (ball bearings, etc) that isn't necessary anymore.
