Tell me what you guys think: 2.5in pipe from the cat back into a 28in thrush glasspack. Picked it up at advanced for like 30 bucks. A while back I took out the the whole exhaust from the cat back and was running a 2.5in straight pipe from there. Then I put on a thrush welded muffler and didn't care for it too much so now I've got this! Very little to no drone all the time. My truck is a 2008 XLT 4wd. Only mods I've done air k&n drop in, air box mod, and throttle cable mod.