I have an 07 with about 100k on it. For the past 30k or so miles I've had a slight clunk noise. It happens on two occasions only, 1) when I pull in or out of my driveway or over speed bumps & 2) after coming to a complete stop, about 5 seconds later, CLUNK. I feel like its coming from the back but a buddy said he had the same noise and it was the rear engine mount. I don't have a ton of free time so I'd like to order parts and be in and out of the shop (not dealership) ASAP. Can anyone give me any insight or what to look for? Thanks guys