rear axle backing plate replacement?

how would i go about changing out the backing plate on the rear axles? they got some rivets instead of studs like up front, could i just cut the rivets off and use bolts to clamp it back together? i got two sets of brand new (to me heheh) backing plates that arent as rusted up as my old ones. just dont wanna cut em off and it not work..

I have one wheel of my deuce held together with bolts and star washers it shouldn’t be any difference you can drill them out and replace it I assume....