raw water cooling help Chrysler 440 manifold

[dfg4240]

Lucky me-I have both manifolds leaking-starboard engine port side has a leak on top and the starboard side manifold underneath.
anyone replace these?
can I disconnect starting at the elbow adapter which connects right at the manifold---part #3619673 or should I start further towards the outlet?
anything I should look for. Looks like it will take a good effort to break them free.
Also-does anyone know where I can get the manifold-3619770-I see some online but all different prices.
thanks
dfg4240

[dfg4240]

I found the information and ordered the manifolds from Barrett marine.

[Big D]

If you have the elbows with the round mounting bases that allow you to adjust the direction the output faces and they are not leaking, do not open up a can of worms if you don't have to by removing the elbow from the riser. Keep those two fastened together and just unbolt the riser from the manifold.

[dfg4240]

I was going to disconnect right at the adapter but did not bring my box wrenches with me.
As far as the manifold itself-I sprayed with Liquid wrench and waited a few hrs and all the bolts broke loose like butter.
I just could not get the adapter free because I had the box wrench set at home.Looks like 9/16.
anyway I wanted to make some support for the elbows so when I pull the manifold off everything does not drop to the floor.
The main thing is I can't get to the boat all the time when I want to.
Barrett marine ordered the manifolds for me but they only sent one.I have to wait for the other one.
Those hoses are hard to get off - Hey maybe I should squirt some WD40 in there-just joking!
dfg4240