It will be great. Now how to do that. Grind or file a smooth rust free area around a proper sized hole, use a through bolt and lock washer along with the cable lug, apply a generous coating of dielectric grease on the bare area, the lug and bolt before tightening it down. If you don’t know what dielectric grease is you may have a tiny tube they gave you with the spark plugs wires you got years ago and you never knew what to do with it. Auto stores have it. And yes you need to go get it.
Yep. Everything RD said and the bonus is with those rectangular factory holes you can use a carriage bolt which makes it extra easy. Also make sure to use a stainless steel bolt to prevent oxidation in the future.