Make sure you get a bumper from a Saff not a hatch, the hatch bumpers are shorter. Estates are no good either.

Then as Glenn has said make sure it is from an early Saff it should have the two number plate light holes in the top and will have either a chrome or a red insert, later bumpers are a lot different as well as having the one number plate light.

It will mean more prep work but once done with a black insert it should look right.