motor mount question

3 bolts per side is factory method correct so that is not the problem, what I see is that the rubber isolaters are shot and need to be replaced which you should be able to get at an auto parts or you can buy the urethane inserts and get rid of the rubber ones. The metal brackets you will need to keep to do either one you choose.A 360 left you should be able to get but if you can’t just re-use the 318 and space it as needed. I am guessing that the bearing was used to lift the motor so it would clear either the steering or the exhaust.