yeah... it'll all shoot out the end when you start the car. lol
however, to get past a noise test, i once tied 2 steel wool balls to a length of stainless cable i had lying around. i undid my axle back and stuffed the steel wool balls down toward the muffler and left the cable hanging out. did the axle-back up and secured the cable to one of the bolts. was nice and quiet - albeit a little restrictive.
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