ahh but your missing the point with the seats, they aren't safer they just made the government more cash which it really needs
I got defected almost 3 years ago now for too low, and excessive track major defect 3 points and ordered over the pits, failed it twice cause the guy told me my standard suspension parts weren't standard, after the 2nd fail he laughed at me saying "you'll never get this back on the road" i had to show documentation that it was the factory setup and get a RWC to clear it, did the RWC at work that afternoon and faxed them 32 pages of the nissan workshop manual along with the other paperwork, accidently hit send 3 time on the fax machine (governments love 3 copies of everything though)
Brood, it'd be easier to clear yours with a RWC rather then going with the hassle of dereg and rereg, also if your sick of the car and want to sell it it's much easier to sell registerd with a RWC.