Will Kelsy Hayes disk brakes fit with '72 steel wheels

I'm considering buying a complete kelsy hayes disk set up for my /6 '72 Scamp. I run the stock 14" steel wheels, will these be compatible? I know the bolt patterns match, I'm wondering if the calipers will fit with this size wheel.

I need to tell the seller (fellow board member) by tomorrow morning if I want to buy. Can anyone give me a quick answer?

Thanks in advance for some help!