Review on Enhance Your Vehicle's Performance with Walker Exhaust Quiet-Flow 21456 Exhaust Muffler by Luis Despain

Muffler appears to be of good quality. But there were no peaks. Walker did not specify the size of the threads on the cleats. They also didn't provide washers and nuts in the kit. I had to measure the diameter of the thread and the number of threads per inch and found it was a 7/16-14 thread. I checked all other sizes including metric but only 7/16-14 bolts. I went to Lowe and bought matching nuts. Nuts turned perfectly but got lost. When I tried tightening the nuts, they easily loosened the bolts. I had to knock out the bolts, drill holes and go back to Lowe to get the bolts. This added a few hours to the project. Very disappointed.