Can I get the red 650lb springs instead of the silver 600lbs for stock shocks or Bilstein 5100s for Tacoma and 4Runner

Unfortunately it is not doable since those springs are different, the 650
red springs are designed to work as an adjustable coilover type system
vs the silver springs, the silver springs are designed to work with
stock shocks or Bilstein 5100’s

 

ToyTec 3″ Lift with Front & Rear Coils for 2003-2009 4Runner