If it was not stored frozen or refrigerated.... that may be a good Idea...
I think, from what I read in other topic on this... that a one stop PULL not push may help... IE: 400 > 200, 100 > 50, as film gets older w/o proper storage.... it losses film speed. So you may to need overexpose to get good results..
If you have a few rolls, why not make one a test roll and shoot frames from ISO 25 to ISO 800 with a few blanks in between to help keep them straight.
And develop as normal. (you don't want 2 things that have changed... (ISO and Development)... then you don't know which change was responsible for the good frame)
Pick the frame/ISO that looks the best.
How it was stored in the 8 years will have a major effect on how much fog and how much change in the ISO is effected.