I have been hearing a noise resembling an exhaust leak.

My Friend, Listen, Don't Mess around with Exhaust Problems--What is you or one of your loved ones life worth?? Carbon Monoxide is Colorless, Tasteless, and has no smell! By the time it is ingested, it is too late--someone will die! Order your parts online with the gaskets! You save a few bucks! Take the parts to a reputable Muffler Shop and have them do the repairs! Not just any shop, because Muffler Shops know all the Smog and Exhaust Particle Laws, and if you are in California, they are really strict, even on the way they want the parts welded together! Now, you are going to have to pay some bucks for labor--because--you don't take Hamburger Meat & Buns to Denny's and ask them to make you a Hamburger, do you? O. K. I hope you do the right thing my friend!