i think my front lip is round 90mm-100mm clearance, no idea what centre or wheel to arch is? mine sits on full adjustable TEIN HA's, any lower than it sits now an its just damn annoying, can't go in driveways, through drive through etc....I can bearly do it now at the height it is.
King Springs use centre of rim to guard measurements to rate there springs, just rim em up an state you want 355mm front an 345mm rear, they'll have something pretty close, give you the part number, then just go into your local repco tell em the part numbers an order em