Fitting 15x10 Rallys on a '72 Blazer 2WD

[jdcash18]

Hi, all. I've got a question I could really use some help with.

I've recently inherited a 2WD '72 Blazer from my dad (he's still with us, btw), and upon going to pick it up, I ordered some 15x10 Rally wheels with 5" backspacing to throw on for the drive home. They fit (and look) great on the back, but it was on the front that we ran into some issues. The wheels won't fit up front due to hitting the steering knuckles on the spindles (I think that's what they'd be), and it appears possibly a little bit on the brake calipers as well.

Do any one of you fine, knowledgeable individuals out there know what I can due to fit these wheels on this old beast?

Thanks!