So me and my dad went out to a dealer the other week looking for a nice grand prix for my sister's first car. We found a very clean and rust free silver 02 GT for a fairly fair price. Theres just some concerns about some noises that its making. First of all it was very hot that day and the car didnt always want to start easily..but would eventually with a couple of tries..but it was most likely from the heat. The next problem is the noises that come from the engine bay. When the car is started theres a slight ticking sound..but once the car sits for a bit and warms up it goes away. Also there is a slight whistling noise that comes from the front when you rev the engine. We think this might be a small exhaust leak somewhere up front but arent sure. The car did have the abs module out of it at the time because it was being fixed but i dont think that has anything to do with the problems it has. Does anyone have any ideas what these could be and how much it might be to fix them if we did buy the car?