This Silencer come two Styles. D Style where the inlet / outlet pipe connects are at the front and rear.
The H-Style, has the inlet coming in from the side and the exit goes straight out similiar to D-Style.
Depending on your Truck Mount's Frame configuration, will determine which Style you choose.
The Acoustic Dampening Qualities and construction of this silencer will keep your truck mount's Decibel Noise level in check.