[71cadc10]

yes I 2nd the trans...that is normal accumulation of fine metallic on the magnet.
clean pan, filter, fresh dex VI, good to go.

for pulling, I usually use the upper most, inner bolts...so that the chain doesn't damage the valve covers.
it doesn't look like a whole lot of aluminum there around the bolt holes...but they are plenty strong. I use the bolts like you have there, if they are threaded in with engaged thread of ~ 1" should be fine.