yes and no, it depends where you get it from iam going to be honest here and say most spares places cant 100% gurantee a engine, as they dont know the history of the engine before they brake the car for spares, and the last thing you want to do is pay for fitting a crap engine, whether you can get your money back on the engine or not,

is yours a 115bhp or 130bhp engine?, there are quite a few late 05 06 ones knocking about for breaking but i also doubt you will get a honest answer about the milage, being a popular taxi and rep car

i suppose it depends on how long you want to keep the car, if its a long time then get new or recon parts, as least then you know it will last (thats assuming the rest of the engine is in good working order and will last as long as the new pump/injectors ha)

its swings and roundabouts mate,