6112 gen2 vs gen3

For the record, I did do a search, but most I found with my keywords were for the trd bilsteins.

I am about to make my purchase for a lift kit for my '17 dclb. My goal is 2.75 to 3" after lift and tires.

I plan to go the 6112/5160 route and I know that the gen3 already sit higher than gen 2 so I see that the gen3 6112's are set at around 2" lift without maxing them out.

Is it true that I could do the gen2 6112 with a 1/4" spacer to get around 2.5 to 2.75" in lift on a 3rd gen?

I will pairing the fronts with 5160's and ome light duty leaf pack in the rears.