I highly doubt it. Getting retail Leopard to run properly on a G3 requires a massive amount of recompilation.
It is feasible that if this project was used as a base
Look here with AuroraTrimCelerator style tweaks overlayed, as done with Sorbet Leopard, it would result in something similar to what you’re looking for. Even then you’d be better off looking at the other options available to you.
You could also stick with Tiger and either search this forum for 10.4 tweaks to optimise yourself, or run AquaTrimcelerator to do some of it for you, if you’re not technically savvy or not willing to get stuck into tweaking manually.