A difficult start to the 2023 season for the Faenza outfit was followed by critical comments from team boss Franz Tost and the sudden departure of head of aerodynamics Dickon Balmforth.
The team is pushing on with a substantial development programme as it tries to find more performance from its car.
Last weekend's Miami GP saw a revised front wing and mirrors introduced, and the new floor is the next stage.
"We'll bring a completely new floor in Imola," said head of vehicle performance Guillaume Dezoteux. "We are looking forward to having it on the car. It is a significant step, it's a big step, so we hope that can deliver on expectations.
"There's always a question mark on the quality of correlation. But so far the updates we brought have been working on expectations.
"This [new for Miami] front wing worked well and in line with the wind tunnel prediction, so we're looking forward to this day."
Dezoteux confirmed that the revised wing was part of an effort to increase outwash.
Source: Autosport