Read the suspension stickey's at the top of this page!
[welcome]1st off, Welcome to FF! I believe if you go w/ FRPP's= Ford racing performance part's, you probolity, won't have any issue's. Give Steve at Toulsey Ford a call. Afew option's for FRPP's are SVT spring's/strut's/shock's= -.05". the next is M-5560-ZX3B= -1.5" or M-5560-ZXM1= -1.5''. And a set of SVT strut's/shock's= M-18000-ZX3B. What ever you do Go w/ strut's/shock's speced for thou's spring's your looking at. Don't go cheap & throw some spring's w/ your stock damper's= no good! How low do you want to go is up to you. sample= H&R has a sport cup kit= -2.6f/ 2.5r / Eibach sportline system= -2.0f/2.2r, & both thou's kit's come w/ damper's. I'd ask about voiding your warranty. I changed out my suspension w/ in a month off buying my car. For the most part if you have no issue's w/ your suspension now, for the most part you shouldn't! There is some suspension stickey's for you to read at the top off this page.[welcome] I don't know what kind of shop's are near you, you could call or go down to them & ask them.