Just to let you know if anyone cares.
I was doing some research into getting some coilovers, becuase at it has been said before there is not much other in suspension choice (new that is). The super street package in question has a spring rating of 8F-5R kg/mm. But the BC package at just 50pound more has spring ratings of 6F-4R kg/mm. So working on the theory that the softer the springs, the better the ride on the road the BC's would be a better choice. BC's are 699 pound. I have sent a request to find if they can fit softer springs on them to match the tiens 4F-3R kg/mm and awaiting reply. The cost of good shocks new are about 150 pound per corner, plus springs if you wanted a whole new setup. Makes the BC's not that bad in price for what you get in terms of adjustment.
Might just be worth paying a little more and getting new stuff, rather than having used parts and having to change then every other year. Must just come down to funds at the time and how long you intend the keep your R