parro

I am a newbie to this site and a driveway wrench turner.

1999 3800 series Chev Lumina 310,000km. I killed her in a big BIG puddle. She is dead. Now I have the opportunity to purchase a 95 Lumina 3.1 Cheap.
I like that I can switch over the seats, any pannels, lights etc.

I am asking what engine parts I should keep that would be interchangeable.

I belive the ignition coils are the same , I'll keep the battery,
alternator?
water pump?
power steering?
wires?
plugs?
what about brake parts, calipers?
master cylinder?

I just put on new gas tank and pricey sending unit that I dont think will fit....if anybody is interested.

I am new to this posting questions business but really need the help.
Thanks Mike