I've had both - the TW one which looks exactly like that one you've got there - however that may have just been a poor quality Nissan bumper - who knows?
My original ute bumper is on ebay - it has no crease marks etc and looks like Datsun wanted it to look like when fitted, not like these huge oversized TW knock off ones.
http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=140418788410&ssPageName=STRK:MESELX:IT