I've not tried them but I can tell you that the backspacing for the original pieces is all wrong.
There's a company that makes aluminum replicas in 17 inch with just about any backspacing that you want. They cost though. I have the links on my computer at the house. If you PM me about the 15th of December, I'll send you the links I have.
In the meantime... here's a chop of a set of magnums on my 86.