It's good to see you back on the forum
If no one comes along with a height measurement for you, you might try sending a PM to, A.T. Rockdriller, 62 short step, KTEN, or LeftCoast32. They all have 4x4's and I'm sure one or all of them would be glad to help. If your truck ends up being too tall, maybe switch to some shorter tires to get it in the garage. Maybe the original tires from your daughters truck?
I can get you a measurement on my son's '63 K10 tomorrow. It is stock height except for the 31/10.50 tires