i have a cutout on my downpipe, and i bought a QTP electric cutout and it would not fit, the motor was hitting the floor underneath, i got this one and it is awesome and the motor is situated for lower clearence, instead of a motor being long and pointy, this one is more wide and is shorter

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here is a pic of it on the downpipe
Untitled Document

here u can find some sound clips
joshv1452 - YouTube