I am not sure how helpful my answer would be. But if you used an LCA software like GaBi or simapro, you can then select the LCIA methodology you want and it does not require that you change your inventory at all. Using GaBi, you can copy your plan and evaluate the impacts based on ReCiPe, or you can just change the LCIA methodology in the same plan. However, to do the comparison itself, you may need to transfer your results to a spreadsheet.

I suspect that you will find significant difference between the results as most LCIA methodologies are developed using similar concepts. What you may find, however, is that the two methods don't cover exactly the same impact categories.

I hope it helps.

Thanks @mohamad adghim