I bought a 91 rex about a month ago and i didnt notice it at first but now its pretty obvious, whenever i accelerate i can hear this strange clunking coming from what appears to be the rear of the car. i thought that maybe it was an exhaust bracket/harness or w.e but it dosent make the noise when i bounce the car or when going over railroad tracks etc. could there be crap in my cat? is it just my exhaust bouncing around? (hopefully). all help is appreciated. thanks

 

If it is an aftermarket exhaust it maybe hitting the rear bumper and causing a noise.