Ummmm. Crossfire's in a garage cabinet along with the stock block, sorry.
Still got the 84, but for now its got an xram. Pulled the crossfire to open the ports up on the crossfire, and am using the xram so I can still drive it everyday. Swapped it awhile back but have yet to port the crossfire. Seems something is always breaking(not the 84 usually) or work gets in way. Also keep getting the bug to work on the 71 vette. Thats a major work in progress.