Adopting new model bylaws

The new model bylaws seem pretty reasonable, and potentially preferable to our schemes bylaws based on the pre-1996 model bylaws.

If we wished to change our standard bylaws to the new model bylaws, is it similar to adding a new special bylaw, in that we just need an appropriate motion and vote (75% to pass) at a properly convened meeting of the OC?

Considering we already have a special bylaw, and others are being considered, can you just edit the base, leaving the special bylaws as is?

Sorry if these seem like simple questions, just want to ensure we get this right if there is a move to change.