Wheel stud length with Rambler wheels

[sgreenwalt25]

This seems to be a common question, but I can’t seem to find an answer. I have converted my 70 c15 12 bolt to 5 lug axles. I plan on using a CPP rear disc brake conversion kit (either standard or big brake kit). I also plan on going with us mag rambler 20” wheels...I can’t seem to find any references to wheel stud length for this application. I would like to put the axles in and seal the rear end up, but want to make sure I have long enough studs. I have installed 1/2x20 - 1.5” studs but not sure they are long enough. Anyone who has used CPP rear brake kits and rambler wheels that may have some input is much appreciated. Thanks.
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