There is 2 problems that I noticed with my 426. While reving it, it soudns like its making a sucking sound of some sort..not sure how to explain that one. And if I am in first gear or so, give it gas and slow down, or just at random times, there is a clanking noise..something that i think is from the engine..i thought it wast he skid plate rattling, but I don't think its that. And help is appreated. Thanks.