I was in an Opposite Lock store today and asked about the RRS bar.
The guy indicated that the bars provided to them are actually D3/D4 bars and they come with a modification kit that allows the bar to be modified to fit the RRS. It also comes with the sticker or plate that says the bar complies to fit the RRS.
Just so you know 
Garry
REMLR 243
2007 Range Rover Sport TDV6
1977 FC 101
1976 Jaguar XJ12C
1973 Haflinger AP700
1971 Jaguar V12 E-Type Series 3 Roadster
1957 Series 1 88"
1957 Series 1 88" Station Wagon
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