Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.
My memory isn't that good as it used to be, but I think anels9 is correct. At some point DSB/IRIS released several of the older models as freeware. I think the Mig-27 was one of them.
The links were available at the IRIS web-site, however the models were physically hosted at JayKay's site.
Since JayKey's site is gone, I think the models might be as well...............
Cheers,
Huub
However its labelled as "FSX/P3D", but looking at the history of this model, it might work in FS2004 as well.
b