Here is the official product page for the N55 lift kit that pairs with Dorch Stage 1 and 2 pumps that is coming soon with some more information:
https://dorchengineering.com/product...-hpfp-upgrade/
It will add an additional 49% flow on top of either the stage 1 hpfp or stage 2 hpfp.
The stage "2.5" setup (Stage 1 + Lift Kit) will yield 117% flow over stock.
The stage "3" setup (Stage 2 + Lift Kit) will yield 160% flow over stock. This is the setup that I'm currently testing for Dorch on my DI-only build.