360 Engine removal

Wonder if someone can advise if the Exhaust manifolds need to be removed before pulling out the Engine and gearbox as one assembly from the shell OR can the headers be left alone.

Trying to avoid removing those tricky nuts from the headers.

If they do need to come off, does it need any special 13mm tool or you just need to get them off with a lot of patience.

Thanks

 

Many tks. will do and delete this from here.

 

Tks for the advise all. I spent about 3 hours and stripped the sides off the manifolds and all the connecting pipes for the cooling system, P steering etc.
Was tricky as I thought the Alternator to one side and AC compressor to the other may have to come off. Luckily got access for one tricky nut on each side through the access panel behind the seats and the nuts came off with little hesitation. Now the fun part of hoisting the Engine out tomorrow and then stripping the tanks and pipework for the fuel system. Rebuild of the new one starts Monday.

Does make you wonder how they manage to do a cam belt service with the Engine in. It must be so hard to remove the Alternator and AC Compressor with everything around.

 

Replacing the Body SHell. As the original car had crashed.