Gas boiling

This may a stupid question but where does your exhaust exit. I had exhaust exit under the car and it would boil the gas in the tank. I ran it out the side and the problem was solved.

My exhaust exits under the car just in front of the axle. I am planning to run the exhaust out the back after the NSRA show. I am a little older now and it is way loud with this 360. I thought the 318 was loud....... I don't think this is heating the gas tank but I will find out step by step. First try will be the spacer. My gas lines are not close to the exhaust, though.