well I just got a battery like 3 months ago so I don't think it's that. Could be the starter cause if it was the alternator, my car would startle while it the car is on. Please give me some feedback

98.5 E1 SvT
18" RACING HART C2
H&R SPRINGS
Brembo Cross Drilled Rotors
KVR CARBON FIBER pads
BORLA CAT BACK EXHAUST
SHO Y PIPE
B&M SHORT THROW SHIFTER
MAGNECOR KV85 PLUGS
Clutch Masters Stage II Clutch
KKM INDUCTION
OMP FRONT UPPER STRUT
BAT LOWER STRUT
SHO TRUNK TIE
MOMO SHIFT KNOB, PEDALS,
LEATHER BOOT
PIAA SUPER WHITES
http://www.members.aol.com/SvTurbo911/svt3.jpg
http://www.members.aol.com/SvTurbo911/svt2.jpg
http://www.members.aol.com/SvTurbo911/svt1.jpg