Thanks, I am not familiar with the 4.7. We jumped past that era of Chrysler stuff that I have worked with, went from the LA sbm to the gen3 Hemi’s. I had to look the 4.7 stuff up. Probably the most interesting thing to me was not the bed plate and the way it is fastened to the block. It is the iron they used to make the bed plate. A modified CGI material design special for the bed plate. I have looked into making some components from ductile iron, which is stronger than cgi. The modified cgi Chrysler used appears was something different than a normal cgi, pretty comparable strength wise to to some ductile irons.
https://www.sae.org/publications/tec.../1999-01-0325/