Just picked up a '15 Titan SL 2wd. Nice low mile truck but the previous owner cut out the factory muffler and added dual exhaust. I have no idea why anyone would want straight pipes with no muffler but I've got to find a quick, cost effective solution to lower the exhaust noise since this is my daily driver. I want to install a 2 in 2 out muffler. I've got someone lined up to weld it in but have no idea what muffler to order. What 2 in 2 out muffler would you suggest to quieten these straight pipes?