Removing the fan clutch hub on 2005

The fan hub bearings are gone on my 2005 with a Kysor fan clutch hub. There are 4 (15mm?) nuts holding the hub on the bracket onto the front cover. There is not enough space to fit a socket or wrench onto the nuts. It seems the only way would be using open end wrench and risk stripping the nuts. Any advice please. Thank you.

It is a D12

 

My problem is I can’t get any wrench onto the bolts with the studs sticking out. The hub is blocking when I try to put a wrench over the studs.

 

Yes there is enough room for open end wrenches but. All the nuts are very tight and I worry about rounding off the nuts using open end wrenches. But it seems like the only way now.

 

Is this the right tool for this job?
14–15 mm 12-Point Metric Flank Drive® High-Performance Standard Handle 0° Offset Box Wrench
Snap-on Store

 

Maybe this one? SOEXM15

Snap-on tools Metric 15mm Flank Drive Plus 12-point Combination Wrench NEW 2019 | eBay

 

I just don’t want to end up like that guy having to use an extraction kit to get the nuts off. Don’t think I can handle removing the pulley while the spindle still stuck on the engine. It would be such a pita.

Trying to get the fan clutch to line up with the hub to remove, any ideas??