I've ran my car in Midland/Odessa before. People don't realize is that it's almost a second slower than sea level due to the elevation. My camaro ran an 11.97 @ 123mph in MID/OD (12.10 @ 131mph in El Paso). When I took it to Firebird Raceway in Phoenix, same setup ran 10.76 @ 129mph. It's just the thinner air.
As for getting better 60ft. times, at the very least you need to get lower control arms. They're cheap, go on quick & they help with some of the wheel hop issues. If you have a little more money get some relocation brackets too. If you have even more money get the upper adjustable control arm. Have someone set it up with you inside the car so they can get the pinion angle right. Using just lower control arms & relocation brackets I went from a best 1.9 60ft. on stock BF Goodrich 18's to a 1.76 60ft., same tires with 4.10's in the rear the whole time.