Hi bz4kev,
My mechanic renewed the downpipe gaskets on my 2007 2.5si in September of last year.
Not the easiest of jobs to do it seems, but it had got to the stage where driving on any water soaked roads made it sound as if the exhaust pipes had fallen off.
I had bought 40mm length stainless bolts for the job, but my mechanic told me that he had to leave out the spring washers because otherwise the retaining nuts would not fit on.
Not sure from where I bought the downpipe gaskets but it is a job well worth doing.
Robert.