is it better to have 4 wheels and 2 (on one skate) dont know weather to take the other wheels off
cherry bomb's or thrush glasspacks make a nice loud throaty sound.
Borla is about the best sounding and longest lasting you can get. But you'll pay for it.
Have a muffler shop install a generic glass pac. They all stock them and most sound pretty deep at idle but quiet down some under load. Trust me you don't want loud if you use your truck to tow with. 500 miles of LOUD while towing a trailer sucks after the first 20 miles. Been there done that!
4 wheels. Your weight spreads out on more wheels you have and will make them spin faster. Also, with 4 wheels you can turn alot more sharpley than with two.