Blueprint crate engine

Newer to the site and would appreciate some guidance. I’ve read a lot of positive comments about Blueprint crate engines and would like to have one installed in my 58 plaza club sedan (318 poly original). Will their 408 stroker mate up to the existing power flite transmission? If no, is there an adapter plate or? Can the power flite take the additional power without modification? I’ve seen comments that the current rear end (7 1/4”?) should be swapped out but can it be used if the car isn’t being raced or driven hard? Thanks.
Gonna have to replace the trans and rear end at a minimum to handle the stroker.