That company just looks like a spotlight company. So they could handle your spotlights (if you want to have spotlights on a Torana - I would not want big round spotties on my Torana personally) so these will of course never function as diffused low beam lights. And of course, they are not designed to mount in a universal 7" headlight bucket, because they are an aftermarket spotlight. They are not a replacement headlight.
The best headlight upgrade - bar none - is universal 7" round semi-sealed headlight housing (try and find one with a nice convex lense shape to look more original in a Torana), with a window for the park light, and a 100/55W warm H4 globe in it. No need to re-invent the wheel here.
You will need to grind out the opening of your lightlights bucket and possibly rad support a little bit to make room for the parker globe holder.
I would recommend setting up relays for these headlights to get the most out of them and to keep your switches/wiring safe with this upgraded current.
They don't look shit, they are cost-effective, and they work well. If you set up lights like this and still aren't satisfied, you may then want to add spotlights.