Both the Wine Red Nismo kitted R33 & Doug's Saurus R33 were imported by us (newera).
The red car has changed hands a few times in the last couple of years.
Doug still owns his from 2007/9
Both have the strut brace you mention
These are a combination of strut / tower bar combined with an oil cooler.
They are very very rare, and change hands for around 3k used
Item is made by Carrozzeria (1 G Plus heat stabiliser)
you can see dougs car here:
http://www.gtr.co.uk/forum/78590-t88-r33-garage-saurus-gt-r-600bhp.html
Hope that helps.