inlet manifold

Anyone ever removed the inlet manifold on their 300. I have an oil leak from what looks like the rocker cover under the manifold on the passenger side. I have removed all the wires plugs pipes and bolts that i can see, the manifold moves slightly but wont come up. I was hoping to get the two pipes under the manifold when it was loose and lifted a bit but frustration got the better of me and I walked away b4 i lost it.

Is the engine better removed or can it be done as i am doing it with the engine in place.

I am not one for going to a garage but i maybee have to this time.

Any replies will be welcome......cheers John Crisp