I had the v-1 SC trim on my 88lx. I too bought it because of how loud the whine is.
Thought it was a great add to the car, helped performance out alot.
It is only loud at idle, once you get to 2000rpms you can't hear it anymore.
It would sometime get to me while sitting in traffic. Alot of stop and go traffic lights, that whine could drive a normal man crazy.
On a positive note, I can say that the whole time I had the vortec the rice-burners wouldn't bother me.
If you get tired of every honda retard at a stoplight reving his engine to get you to race him. Than the vortec is for you.
Emagine: You are pulling up to a stoplight and you see a ricer in the next lane.
He is saying to his buddy :alright look at this looser in the mustang coming:
Just than you pull next to him and everything in normal, Until your car's idle starts to drop from stopping.
Now he hear the whine coming from the hood and know what it is right away.
He may not know what your car can do but he will reconize the sound, and suddenly the guy who thought about reving his engine at you will think twice.