Unless you have a convertible you dont have subframes.
What part exactly are you talking about?
Maybe he has added subframes at some point. Many people did not realizing the rigidity of the new chassis.
I have subframes on my coupe, but i added them seeing how i race the car a lot.
I beg to diffeer for verts, i installed umi full length subframes on my vert, they join the inner and outer frame rail and they defiently stiffened the car up alot.
I am pretty sure he doesnt have a vert, but i could be wrong.

