Alright fellas. 96 1500. I drove my truck to another town last night and a funny sound started under the hood. The more I drove it the worse it got. Then on the way home on open road I could only get up to about 50 mph. Before I got to a buddies has a mile or so down the road I was down to about 15 mph. Its almost like its starving for air or something. The more you get on it, the more it lugs down. Ive been all over the motor and the only thing i found wrong was a loose sparkplug. Replaced all four. No smoke no nothing out of the ordinary except for no power. Could this be a plugged cat? If it is can i just gut the cat and solve my problem? Thanks everyone.