AFM Racing doesn't allow safety wiring of master links, so I use Jim's method of a little glue on clip. I've got a 428 chain conversion. Lighter than stock, yet also stronger and more durable due to wider rollers. With X-ring chain it's lasted me an entire season so far with racing and over 30 track days.
For breaking chains. I've used this same tool for 30-yrs. It's chain-size independent.
https://www.amazon.com/dp/B004HKIU4C
To install rivet type master links, you can use a pin-type tool with block-off plate on back side to support pin.