small bolt patter to big?

There are numerous ways, I believe you can buy adapter plates to go from 5x4 to 5x4.5, but I'm not sure how safe they are. But for the front wheels you will need to switch to big bolt discs (73 - 76 A body), and for the rear wheels you can either buy a set of big bolt pattern axles, or switch to a big bolt 8 1/4. Someone correct me if I'm wrong.