318 rebuild suggestions

Ok

I have been looking at the service shop manual and it is referencing tools needed to change out the main bearings. Is this tool needed or is there an equivalent?

It also talks about changing the camshaft bearings is this nessessary? Again will need a tool for that.

On the bearing kit it asks for size, where will I be looking on the original parts to find that information one I have the engine opened up.

So I guess I need to know what tools I will need to rebuild the engine other than the standard tools. So that I can change bearings and rings.

Thanks