I will be interested to see what you think with the windows up. I just pulled the original cat and muffler off of my '95 and did a single 3" 50 series flowmaster. I do have my son's topper shell on it right now, but it has some panel vibrations , which i think is the back wall of the cab, about 2200 rpm. I didn't do a tailpipe yet, since I was suspicious of the decibel level of the muffler.


It's pretty close to your current 2nd gear. So if you want a real-life comparison, imagine always starting out in second gear.