Moving my glass packs? how would it sound?

my truck has straight pipes with glass packs, the glas packs go up right in front of the rear end and then the pipes go over and out the back. I want to hear then im the cab, how do you think it would sound if i cut the glass packs away from the pipes with a couple inches on each end and then re mounted them in between the cab and the bed then have maybe 15 inches of pipe coming out?