I had several sets of these made a couple of years ago. They work good and you will notice more vibration.
This set is not finished, to finish them you can use a threaded rod and jamb nuts on either side, loctite everything together and they work great. This is how I assembled them on my car. You could also tap the hole and use studs on either side. These should work on any v8 car, I do not think the v8 and v6 are interchangeable.