no dent on the top. What happened is that theres a spot where it was hitting against a piece of metal on the frame of my car and it just made black spots on it and some dents. The cooler works fine, ill clean it up if someone buys it....im just lazy lol.....ok the inlets are 3" and the intercooler measures 24" from end tank to end tank, 12" in height, and is 3" thick. Like i said, i made 430whp on it and never had a problem....i could probably have pulled more out of this but i decided to just get a bigger one and be safe.