Leaf Spring with lift confusion

I’m wanting to swap out my leaf springs for a whole new leaf pack and I’m extremely confused because I already have a 3” suspension lift in the front and rear and I’m not wanting to alter the height after changing the leafs out. Do I need to go with a standard leaf pack? Or do I need to get a pack that’s advertised to add 3” of lift? This is probably a simple question/answer but please be patient with me because this is all still fairly new to me and I can’t figure out how to word it to get an answer in my search bar

 

What kind of rear lift do you currently have? Post pics.

 

Assuming you are basing 3” on a statement in an advertisement, measure your current center of hub to fender flare distance on each corner at ride height and at full droop and report back.