It's no actual brand, it's a mixture of all sorts of parts, and whoever fitted the Perun massively screwed it up ?
I'm trying to say "It's not quite as idiotic on a V3 with a motor cage", but my fingers are cramping up typing it.
Not too crazy on a v3 box as you can just pull the motor and cage off, same with a v6. Typically i'd have the motor wires running to a deans connector so you can unplug from the mosfet side.
Has it been worked on before?