I prefer the Shetland Pony bov.
when crammed in your back seat, windows down, and jabbed with a Parker Ball point pen at the exact same time as gearchanges, it makes the best neigh/flutter/wastegate chatter noise.
I have 2 for sale if you are interested.
but you will have to get your own pen.
pics attached.
http://www.visitshetland.com/images/dp/uns...ony-enlarge.jpg
http://www.dkimages.com/discover/previews/876/65003527.JPG
Plain brown one makes the sickest sound..
especially if I draw blood upon pen jabbing.