What lift?

[k-nuts]

Been a while... just got back in to working on the Jimmy. Tired of just lurking and not working!!
Doing some safety and cosmetic updates, brakes, steering, dash etc but my questions is:
Any idea what lift the PO had on here??
The ride is ok but shocks are shot. Currently these are 31x10.50x15 on what I think are 15x8 rallies. It Has Rancho 5113 shocks in front and 5116 in back. No blocks. Front spring seems pretty flat. Has 3 leafs. Rear are arched with 6 leafs. Front 24 1/2” center of hub to wheel arch top. Rear 23”. Sits pretty level.

Basically since I need new shocks I was thinking also just getting new springs too. And going up to 33 12.50 and looks like they’d fit as is, but don’t want to order a 2.5” and be lower than it is now or order a 6” and be too tall. I like the way it sits and think 33’s be perfect.
Thanks in advance for any help.