Bottom line IMO, if you purchase and add R/A pans to your FGF for any reason other than looks, you will be sadly dissappointed. If you are looking for performace, put that same money towards a good set of heads and dollar for dollar you will gain much more going that route.
However, if you already have a killer motor/heads, or just want to make your FGF look as tough under the hood as does the rest of the car, go for the pans, you will not be dissappointed!