I believe you will be very unhappy with a straight pipe. The 72 degree firing impulses of the V-10 need some type of sound cancelation to have a decent exhaust tone. I have a straight thru-type muffler on mine, and would not do the same again. If you want loud get a FlowMaster 40, then you'll have a good tone and volume of sound. The resonance at about 55-65 is horrendous, it will drive you clean out of the cab unless you have 8,000 watts of stereo.