Leveling kit differences?

Can anyone tell me the difference other than the name. Just curious.

 

I just received the SDT kit today and I’ve put in a handful of these kits into various trucks and I’ve got to say I’m pretty impressed with the quality of all of the billitt in this kit.

 

I leveled my truck with an SOS kit that dropped the rear 3.25", handling is improved and the truck sits level.

 

I ordered the 3” kit but the spacer measures 1 3/4”. Wouldn’t that be 3.5”?

 

Leveling kit spacers are not a 1:1 ratio. The lift will me more than the thickness of the spacer.

 

Ya that’s what I thought. So is it a safe assumption to think that at 1 3/4” of spacer it's gonna be about 3.5”?