Interestingly the 4/4 owner I met by accident on Sunday was asking me about bottoming out suspension on his five year old car.
Woodstock (a 1972 4/4) did this, but I fitted +8 springs and new rubbers in about 1989. The +8 springs at that time were slightly stiffer than the 4/4 ones and a known parts bin tweak rather than paying more money for 'uprated' springs.
Totally cured the problem and I drove the car for the next 20 years.
