Engine Removal Prep Questions/Advice

[Alloyvert]

I am pulling the leaky 283 out my '64 C10 (4-speed on the floor) before winter and have a couple questions. I was under the truck yesterday to start the prep and was able to get both of the exhaust pipes broke loose from the manifolds.

Next up is the tranny.
Although everything is caked in grease/dirt, it appears there are only 3 tranny to bellhousing bolts, correct?

Also, does the bellhousing simply rest on the rubber crossmember mounts or are there some bolts?

My main question... should I remove the tranny to bellhousing bolts & leave it attached? Or remove the bellhousing to block bolts?

Once I sort out the tranny, I will deal with all the other top side items and hoping the removal goes smooth and quick.

Thanks in advance and open to any other words of wisdom!