Anyone know if these wheels will fit over disc brakes?

http://www.summitracing.com/parts/usw-70-5855r

Funny how things happen. I ordered the 77-78 CJ rotors and the Chevy calipers today to do the swap, then found a post on Craigslist later for a 79 Dana 30. My D30 has 3.73's in it...could the 79 D30 have 3.73 or is it more likely to have a different ratio? The seller isn't sure what's in it. What would you do? Just swap the brakes or swap the axle, maybe including swapping gears, and then sell off what's left? He's asking $250 but he's negotiable...I don't think I want to give more than $200, so I'm weighing that against the disc swap cost.

Also, obviously wondering about the wheel clearance. Thanks.

 

I just bought and put on the Procomp steel wheels with "D" windows (58-5885 I think). They have the 2.5 backspace. I did have to grind a little off the outside edge of the caliper to get it to work, maybe a millimeter or so. I have the 2 bolt calipers off if a 79.

 

Most likely the '79 has 3.54 gears. I would be surprised if any current production 15x8 wheel didn't fit CJ disk brakes, but stranger things have happened.