can u post a few pics of the areas your havin problems with? i went to your albums but didnt see it. isnt there some bolts that are inside the trunk along the sides that hold the sides on and there should be a screw at both corners of the bumper in the wheel well. maybe the new bumper is missing some tabs and you just over looked it.
1999 Cobra black with medium parchment interior
JLT CAI, Delta Force Tune, Pacesetter Longtubes, o/r xpipe w/cutouts, Flowmaster Super 44s, built t56, Kevlar clutch, Nitto NT05R, Ford Racing 4.10 gears, MMR 900 rotating assembly, vortech v3 si, twin aeromotive 340s, aeroquip lines, 80lbs injectors