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
Cheers

Jim