Straight-thru design

You know them by many names:

Magnaflow

Ultra Flo

Cherry Bombs

Orange Peeler

Thrush

Smittys

Glasspacks

Race Bullets

Sidepipes

And many others

Some are round, some are oval, or rectangular.

They vary in tone and volume, regardless

all are variations of the same design.

If you can see thru it, ya know you that's what it is.