I recently got an 85 brougham with an lt1 from a 1996 impala ss already swapped in to it. The swap was not completed and I am now just getting comfortable with gbodys since I have never worked in one before. It needs headers, spark plugs,spark plug wires and that’s all I could get from my own knowledge, I have them ready to install but I know I’m missing more things. If y’all could help me figure what those things are I’d really appreciate it.