LS430 /Tanabe DF210's/Bilstein shocks ??
 

2004 LS430 sport suspension. I have bought Tanabe DF210 springs, I go to the Lexus Dealer and they try and charge me $230 per shock(O.E.M. sport shock) They also say i have to get the correct numbers off the shock so they can match it up correctly, They could not do it with the ViN# . I though that was strange.

Would Bilsteins work for this set up(DF210's) or would it be way to harsh of a ride??
If so what kind and where is the best place online for them?