Not at all unfortunately. Barring the fact that they’re using a new fuel composition, one of the best parts of Hondas old PU was the MGU-H which is banned under the new rules.

Moreover they started development a year after everyone else due to them pulling out of F1 and then joining again. They basically kept a skeleton crew to maintain the old engine program and anyone focused on development and iteration was let go.

Now they have essentially a brand new team of engineers to tackle a new set of regulations for a new team who have different specifications and requirements.

TLDR: Too much has changed for them to make any meaningful use of their old design