Hi Team, I currently putting my 455 back into my 73 Centurion and have 2 issues Im trying to sort.

Firstly the intake manifold has 2 front and 2 rear holes that look like they either should have caps in them or should have a plug in them and connected somewhere? (to the heater perhaps?

Secondly, I note previous owners have been doing some electrical work and its looking a bit shabby so would very much appreciate a picture of an electrical diagram for the car.

Thanks in advance.

Inlet Manifold 73 Buick Centurion 455ci... Arrows.jpg
73 Buick Centurion 455ci inlet Manifold.jpg73 Buick Centurion 455ci inlet Manifold.jpg