When i had my 97 cobra done through GRC they changed shocks and springs and when I had relaligned it, it was way off. The other problem i had, is a year latter the springs setteled throwing the alignement off again, I did not notice this till BFG KDW's where totaly eaten on the front inside edges. FYI
actually u should get the rear aligned as well. On live axle cars u only need the front because there rear and is one solid piece and just squats down...however, on IRS cars, the car will squat after lowering pushing all 4 rims out. I would do a 4 wheel alignment, just to be safe.