hey guys i have blown the head gasket in my 86 so i am goin to fit a fresh motor.

now it is a big port with t-vis but im am unsure if it is a blue top or red top as it has been painted.

are blue top and red top interchangable with my harness?

from my reserch (wikipedia) to me it seem that they are but id like to be 100% sure

Mine has a JDM RWD manifold too so i think that it would be manifold absolute pressure (MAP) set up.

Thanks in advance Ryan