google, win
http://www.frsport.com/Swift-4F008-Spor ... 62266.html
Swifts drop 30mm on a Standard GT (which is 15mm HIGHER than a GT-B)
so H&R would be similar
BUT
you would need to confirm that the spring perch heights are the same from stock struts to the Billies.
I know Phat had all kinds of issues with getting the S-Tech's to be the correct height on AUDM billies
