I've got a magnacharger on my 69 Burb (5.3). I haven't quite got to that part of the build yet, but I should be within the next month. I'm hoping to get an extra 150 HP out of it, especially after the tune. I don't think it will make as much noise as my Vortech on my 68 SWB, but they look pretty cool sitting on top of the motor,

. I have been very impressed with the vortech power.