Originally posted by Procyon:
You fellows are incorrect about the change in displacment on the 2.5L.
All '99 and up 2.5 are actually 2.49L.
All '98 and earlier 2.5 are 2.54L.
That you are definitely going to have to prove.
All factory service data says otherwise.
I might buy they changed over during the end of the 99 production run (since it was very late in being finished due to the strike) (Cougars especially)
Also the change to returnless happened late model year 99. IMO it's the same reason as above. I'd buy they changed both at the same time, but definitely
NOT ALL 99'sThe 99 SVT's have the larger bore for certain.