Cams will not give you better acceleration, they free up hp on the higher end and move the power band around- thats all they do. Aftermarket cams are rarely made specifically for any car- what you do is you take your cams to a shop and they "regrind" them to match new specifications. it's not a minor mod.
Again, people who think a Turbocharger provides low end torque acceleration should be slapped; thats what a supercharger is for.
Finally, people need to stop saying that a larger exhaust will open up low end torque- if anything, an exhaust is the WORST mod you can do to your car without preparation. It KILLS low end torque while opening up a lot of high end hp. The theory behind this is not the mythical backpressure (which is ALWAYS bad), but rather a physics concept called gas scavenging. Think of it like a rope pulling through your engine. the more compact the gas particles in your exhaust (the smaller the exhaust pipe size) the more they're going to latch onto each other, the harder they will pull the "next batch of air" into the combustion chamber. Its hard to find a suitable combination between backpressure and a small enough pipe to maintain a desirable level of gas scavenging- but low end torque always suffers.