Small Block Water Pump - Bolt Locations ?

I replaced the water pump on the 318 in a 78 Dodge van I got cheap and I know some of the bolts need to be sealed but I don't remember sealing any of them.
I don't drive it, I use it mainly for water tight rolling storage but I might need to move it around or actually haul something with it.
I left it sit dry for almost a year then decided to put antifreeze in it and the area around the upper passenger side bolt started leaking once it was full.
I guess I forgot to seal that bolt and I couldn't remember which ones were critical so thanks for this old post, plus mentioning RTV is fine as I don't know if I still have official thread sealant but I have plenty of silicon available.