Stephen, the amendment in Fastrack (March 2005, p F-34) removes the sentence that read "Showroom Stock, Touring and
Improved Touring cars are not required to install towing eyes but it is highly recommended." Thus, according to the GCR, tow hooks are manadatory for these classes.

ITCS D.10.h (p20) in regards to tow hooks is an allowance ("Towing eyes per GCR Section 17., may be fitted.")

If the ITCS had read "Towing eyes per GCR Section 17 are not required" then you'd have a point; however, a GCR mandate trumps an ITCS allowance any time. - GA