A beautiful color on a beautiful car, for sure !!
If its the width of a fine human hair, and you dont see a dfferent color at the bottom of it, I would venture to say it will come out just fine.
What color, size, and brand of pads do you have?
For something that narrow, I would want to use at 4" pad with corresponding backing plate, and Meguiars 205 to start, and see what happens.
Remember, this particular polish has non-diminishing abrasives, so they wont break down as quickly as diminishing abrasive products. You will be able to work the M205 on it a long time if needed.
Prime the pad with a Q/D, Meguiars has one that they recommend and its listed on the back of the bottle of M205 and 105, but you can use something else if you dont have it.
Then put a few dots of polish on the pad in different places, and rub it on the area, turn on the machine and work the polish into the scratch, and as you get more comfortable, turn the speed up higher to allow the pad to go into a circular motion as well as the oscillating motion.
When the polish is pretty much gone, stop, wipe off the area with a good scratch free towel and look at your work. Is the scratch going away? Is there any paint color transfer on your pad?
If the scratch is going away/gone, you are done ! If you get paint coming off the car onto the pad, and the scratch is NOT gone, you need to make a decision on whether to keep on going vs how much paint can be safely removed, before you take too much off.
If this is a newer Corvette, then there will be no paint transfer, so the above is a moot point.
Again, with the Porter Cable, try to get the front edge of the pad on the scratch itself if its possible, so you dont end up polishing up a 4" area, and it looks way different than the rest of the finish, because its polished.
If you choose to go ahead and do the whole vehicle, then this is also a moot point.
Be sure to put a sealant, wax, etc., of your choice on afterwards, to protect the area you compounded, because you will have taken off any protection, wherever the Porter Cable worked..
You can do this, the Porter Cable is the best way to start to learn. Some of the BEST Detailers on this site use this tool exclusively, but also have rotary machines too, so you cannot go wrong; its the most forgiving tool to use.
Just remember, you are in control of that machine, and you can pull back from the paintwork anytime you want to stop, check, take a break, etc..
Good luck with this, I am sure it will turn out beautiful.
I would rather be doing your Corvette than this 10-year old black, never been washed, detailed Toyota Avalon in my garage.....
Dan F