my slow monte

i have a slight problem, i just recently bought a used 2000 monte carlo with lots of miles and on top of all else, its the ls. So at this point all i have is a 207 3.4l v6, nothing to brag about. Right now it has around 180 horses. My brother, who has a 93 camaro has the same engine except with 225 horsepower. My problem is that i cannot find any aftermarket performance parts for the ls model. If anyone knows of things that will boost my horsepower, torque, or just overall performance, please help me out.

if it has tons of miles on it i wouldnt be beating on it...lol...umm...u can look for 3.4 grand prix performance parts the motor is the same