Suggestions for minor issues?
Issue number one is the alarm. The car currently has an aftermarket Clifford alarm system in it. I don't know how old it is (I will have to check the paperwork and receipts I got when I bought the car, and there is A LOT...), but I get the feeling it was probably installed by the original owner well over a decade ago. The alarm sucks. EVERYTHING SETS IT OFF. Garbage trucks, my brother's obnoxious SRT-4 with its chambered exhaust, even lightly tapping on the body will do it! I want to get a factory alarm back in it, but don't know if this is feasible, or what costs I would be looking at. I really don't want, nor need a different aftermarket system.
Issue number two is my fuel economy. Or lack thereof. I drive it nice and easy, stay out of it, use skip shifting (not the Godforsaken factory one), and get the same mileage as I get if I drive with a somewhat heavy foot: a whopping 12mpg. Am I crazy or is this really what I can expect for mileage no matter what? My parents have both had LS1 f-bodies that got between 16-20mpg (I know I am referencing two cars that have LS1's while I have a lightly tuned LT1). My car is all original except for a 3" Borla exhaust (cat-back). My tires are fairly worn, but still have a few more months left in them.
Those two issues aside, I have been thoroughly enjoying the car. Suggestions? Advice? Input of any kind is appreciated.

