suspension drop requirements
 

I'm looking to install a set of FRPP springs or Eibach springs to lower my '08 V6 mustang approx. 1.5". I also want to fit 18" wheels, up from the stock 17". Will I need a set of caster/camber plates for such a minor drop? Is there enough adjustability in the stock shock tower to acheive proper alignment? Thanks.

never can tell. I always recommend a set of plates with a lowering job because you can't tell till you get it on the rack if it's going to be able to get back to somewhere near spec or not.