My car speakers in my 2000 mustang gt recently stopped working and the amp for the inside speakers was a custom install along with the sub amp, so the guy who installed it mounted the speaker amp inside of my tire well. To check the amplifer, I unscrewed the amplifier and noticed a gas smell when I did so, I discovered the guy who installed it must have drilled through the gas tank because when I stick my nose in front of the hole I get a strong smell of gas. The hole is the size of a screw, is this dangerous and so far I have just sealed the hole with some dynamat and see no problems with keeping it this way. Is it ok to keep the car in this condition or do you think I need to replace the tank. Also I have noticed a leak of some sort on the bottom of the car, could this be part of the problem or it it unlikely, seeing as how no gas is leaking into the tire well. I cant tell whether the leak on the bottom is oil or what, but it doesnt seem to smell like gas, then again its dry.