Hey Adam, Ray here; my 64 had a 283 in it when I got it & the shroud is an aftermarket heavy plastic one. 283 had a busted piston. Got a good deal on a sbc 400. I'm probably gonna have to modify my shroud. My daughter bought me some stuff for the truck for Fathers Day. She got them from a place called TRUCKSHOP out of Orange, Ca. The web site is
www.truckandcarshop.com. I got a catalog from her order. They do genuine & reproduction parts. I found some stuff in there that LMC didn't carry. Hope this helps. Thanks again guys.
