I had one of the very first crossram packages that GM sent to a few folks. I've seen several complete NOS setups for sale over the decades but I see subtle differences between mine and the later issue units. Of course, mine had the 1st design carburetors with accl pumps on the primaries only. One thing I definitely remember is the fact that there were NO manifold cover to manifold bolts included in the package. I suppose that's why folks are debating to this day about what the correct bolt head marking was supposed to be. There isn't a correct bolt. I remember using plain cheap hardware store bolts with no marking on the head, at all. Also, the throttle return spring bracket appeared to have been dipped in near gloss black paint. Brackets in later packages were natural, unpainted.
My new 2X4 package also included the extremely rare special fuel shield that was to be installed behind the left carburetor. (image below) (eventually sold to Wayne Guinn decades later) I think only a handful of 2X4 packages included the shield. Wayne posted a picture of my shield in his book, Camaro, Untold Secrets.
The package also included the four blueprint installation instruction drawings and parts list. I made copies of those sheets many years ago and my GF was selling the copies on ebay. I think several folks have made copies of my copies and still sell on ebay. I sold what must have been the 1st design cold air plenum about 20 years ago too.
I still have a LOT of info from GM on the crossram.
