No. Industrials k31 is an old clone of a Pius turbo. Should work ok of you can handle dealing with them.
But yes, all standard k31's are 71mm wheels. 4202's are 74 iirc. For what it's worth, David Lott is running a gtx42 and he's making some dang good power with it. Certainly more than you'll see out of a billet 31
.