Les Richmond Automotive in Thomastown (Vic) sell a steering protector replacement that is basically made from fabricated and folded plate steel, and that sounds similar to what you're looking for. It doesn't mount to the bullbar however, instead it picks up on the existing protector mounting points on the chassis, once you've removed the factory item.
I've got one on mine and it seems a decent bit of kit. I also run an ARB bullbar. No problems (except it's supplied gold-passivate plated - yuk! So I painted mine black).
DiscoClax
'94 D1 3dr Aegean Blue - 300ci stroker RV8, 4HP24 & Compushift, usual bar-work, various APT gear, 235/85 M/Ts, 3deg arms, Detroit lockers, $$$$, etc.
'08 RRS TDV8 Rimini Red - 285/60R18 Falken AT3Ws, Rock slider-steps, APT full under-protection, Mitch Hitch, Tradesman rack, Traxide DBS, Gap IID
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