Grommet for amp

[L_C99]

Anyone know where is the best place to put a gromet through the firewall in a 2002 Subaru Legacy GT Sedan? Any pics would be nice too. I thought I would try the easy way before all the measuring :D

[Dookie]

You can just use some of the exsisting grommets in the firewall. A good location would be around the brake booster.