This metal striker plate is a good replacement for many entrance doors.  With the exception of a lip on the back side, it is relatively flat.  One edge (shown on the right side in the photo) is beveled.

The striker is 2.5" tall and 1.15" wide. The holes are 2" on center. The rectangular opening is approximately 1.4" high and .55" wide. The opening is set back .25" from the non-beveled edge and slightly more than .25" from the beveled edge. The lip on the back side (press MORE PHOTOS button to sde it) is on the edge of the opening near the beveled edge if the striker.