I think that may of been the site.
As youve stated, it should be around the same as the 888 being a Z20LET, its just these new Tax brackets have really got people wound up and talking.
Even if my Vectra was running problem free I would have probably thought about changing it due to running costs, what with the Tax & the flaming fuel prices.
With my drive to work, Diesel was the only option really, & the new car cost £120/yr to Tax, hopefully dropping to £90.