Type Data Cert, scroll to the bottom
http://rgl.faa.gov/Regulatory_and_Gu...$FILE/A7ce.pdf
B58 P PA refer you to the maint manual, the PA is simply the P that has had the MTOW as a paperwork exercise reduced to allow it to be maintained under lamp I believe.
you can search the Type certs here
http://rgl.faa.gov/Regulatory_and_Gu...meset?OpenPage
though there may be other limits such as AD's etc and the SIDS mentioned for the 421. you can register on Cessna's site and access the SIDS, which are the SB mentioned above.