yeh i know not a necessity but has anyone fitted any and what did they use. i have seen these fitted to the later grinnall cars
[8 whole cylinders worth of punch to ram the world through the windshield and out the rear view mirror. Car & Driver]
1981 Grinnall TR7 v8
1981 Black FHC
1979 & 1980 Black Premium FHC(laid to rest) Sorry
John