Cannot effectively be welded as is cast, unless you find someone who does aussie welding.
You can get brand new ones, or you could just get a bit of simple machining done on it and add a TRIGGER WHEEL, just cut off all bar the 90 degree lugs, not a hard job by any means.
TRIIGGERWHEELS.COM, based in ELY/cambs, he is also on ebay.
tabetha