G'day Adrian,

I'm almost certain they will, from memory the Pioneer Tradie is the same as the standard Pioneer with its mounting points.
The long brackets are 28mm long on the section that rests on the racks, so this will span the outter rail and the next one in.
The Eclipse 180 Freestanding Awning only requires 2 brackets.

G'day Max,

I've just taken some quick measurements and the holes of the Darche bracket don't align in any configuration with the backing plate on the Bushwakka 270 - they're not compatible sorry.

G'day Marv,

The listing for the Long L Bracket is for one single bracket.

G'day Barney,

The rails on the platform you've mentioned run side to side over the vehicle, so you shouldn't have any issues mounting these brackets.
You'll likely need some t-channel bolts or similar, that are suited to your platform rack though, but the brackets themselves should be fine.
Hope that helps.

G'day Doug,

There are 4 holes total - 2 top & 2 bottom, and measurements are centre to centre.
The holes are 10mm diameter.

Between outer bottom & top - 133mm
Between outer and opposing inner - 113mm
between inner bottom & top - 93mm

Hopefully this makes sense!