Hooker offers universal bolt-on turnout style mufflers which are perfect for Jeeps, Broncos and Landcruisers using fenderwell exit headers. By using a spin-ring for universal mounting, these 3-1/2" O.D. case sidemount mufflers will bolt to any 3-bolt 3" O.D. ringed collectors. Hooker supplies mounting hardware for proper muffler support. The mufflers use a welded all metal core for longer life and are engineered to control sound without restricting flow.