Guys,
my 2003 2.6 not running well, it started at the weekend, slight misfire and then engine light flashing, then on constantly. Read the fault codes and it comes up 0300 and 0303. I am thinking coil packs, can get some vectra 2.6 ones, but will they fit OK ???

or should i assume something else. The coil packs were not in good shape, when i changed the rocker gaskets 3 months ago. The rubbers split from lying in oil, and the bakalite end adrift.....

thanks