Hey guys, just bought a silver 07 ss/sc last month. Went up to quebec to find a g35, but came back with a cobalt. Couldn't resist the deal! The car is in amazing shape with only a small paint flake under rear wheel well and some surface rust underneath but very solid it was undercoated and winter driven for only 2 years of its life. The guy I bought it from was selling it cheap because he lost his lisence and it would possibly overheat because of a bad thermostat... after checking it out the car was actually fine, ran good, and didnt over heat. Drove it back to new brunswick and right up to ontario and had no issues. Only codes I could find was that it was running rich. The battery was the original battery and ended up dying on me. Replaced the battery and it works great. Anyways, I'm wondering how far I should go with mods without decreasing its value or reliability. Being a student in Canada on the east coast rust is a big issue for our cars, and currently its my daily and I'm not sure if I want to winter drive it yet. Any tips on things I should change or maintenance to do on the lsj? Car just crossed 170000kms and from my knowlege everything is still original. So far I have put some injector cleaner in it... the owner said it ran its whole life on 87 octane.

Thanks.