depending on the year, normally 2 along either side of the block, 2 on the front (upper right and left corner of the block) and 2 on the back
There are none.
Yes.
yes
yes but it has to be 83 or newer
No. Standard 350 engines have 4.00" pistons, standard 400 pistons are 4.125".
its about 350
It should work well.
The main journals need to be turned down.
YES. That is a direct bolt in.
Yes. No problem.
It depends on the cam.
No. The 400 is externally balanced and requires it's own flywheel.