2/4 and 2 or 4 bolt main bearing?

[roadrunner-europe]

Hi everyone,
work is done, ride out for a testdrive this evening. Seems that everything is tight.
Have changed the shaft sealing ring at the rear end of the engine today. Found a leak there last week.
The oil on the intake manifold came from the foot of the distributor. The point at which the screw holds the clip, is 3 mm higher than the point on the standard intake manifold. It was firm enough to hold the distributor on the good timing position, but not enough to press it downwards.
Now I even know, that it is a ´70 two bolt Camaro engine.
Thanks to everybody

Greetings Chris