Drum Brake Repair Question

[rockdawg]

I need to replace a leaking wheel cylinder on the front of a 69 with drums. I need to remove the large nut on the top (@ 12 o'clock) that holds the springs and wheel cylinder. This thing has not seen daylight in 40 years and does not want to budge. I just want to double check that this thing does have right handed threads doesn't it? I do not want to tear anything else up trying to get it loose. Any tips on getting this thing off other than a breaker bar and cheater pipe?

Thanks