Glass packs give off a smooth consistent Rumble that will gradually get louder as more of the sound absorbing material burns off. the longer the GLASS PACK, the more sound you will reduce.

Chevy

1972 Chevy Monte Carlo - 18” Glass packs

1964 Chevy Impala - 26” Glass Packs

1962 Chevy Impala - 22” Glass Packs

No Sound* 1969 Chevy Impala - 18” Glass Packs

1963 Chevy Impala - 30” Glass Packs