He has had this car for over 30 years, just gathering parts for a restoration.
I don't remember ever seeing an exhaust manifold like this before
http://www.hotrod.com/articles/22-crazy-mopars-muscle-car-nats-chicago/
http://www.streetmusclemag.com/event-coverage/car-shows/mcacn-2016-muscle-car-show-par-excellence/
you can see a full gallery of it from Dave himself at http://www.forcbodiesonly.com/mopar-forum/threads/significant-fuselage-c-bodies-at-chrysler-nationals-at-carlisle.25544/page-2#post-369186
