Any SC can benefit from a chip. Initially it will result in anywhere from 5-20rwhp depending on your car's current condition and original factory tune.
As long as you have the stock injectors, airbox, and MAF meter, there is no real *need* for a tune. You have to understand that there is "tuning" which improves the factory calibration, and then there is "tuning" to correct modifications to the factory tune (caused by bolt-on mods done to the car)that have been detrimental to the tune.
My suggestion is that you plan a series of mods that are within your reasonable budget, then get the car dyno'd. After you have completed your mods and have a dyno sheet in hand with AF readout, then I can build you a chip that will correct any possible problems as well as maximize the factory calibration. In this case you will generally make more HP but more importantly you will be able to drive the car with assurance that it is running correctly.
Once you change your MAF, injectors, or airbox, you no longer have any assurance that your car is even running safe, much less optimized. I've seen cars with as little as a pulley, MAF, and CAI that threw the tune so far off that AF went to 16:1 on WOT. This condition WILL blow headgaskets and can result in detonation that can bend connecting rods, melt pistons, etc.
Not trying to scare anyone, but those are the realities of modifying these cars. One thing you don't want to do is get a chip done and then add a new MAF, FMIC, or MPII supercharger etc. That would be a bad idea.
I offer reburns to original purchasers for a very reasonable amount so I wouldn't worry so much about needing a reburn. The most expensive part would be the dyno time.