Im seriously thinking bout building a 3dr froma shell as a long term project, and i know a lot of parts are common, but im not 100%

will these parts be similar?

(from saff cossie to a 3dr)

front X member
rad n fans
Loom ( engine side, i know wont be plug n play)
dash
centre console
pas rack

as i have a 4x4 sierra donor for a 24v im building, can i use the front suspension from this, ie minus the front shafts? (rack, pas, lower arms etc etc)

sorry if its confusing, but i need to start thinking about getting bits together!