Porting small block 915 j-heads

I am assuming the numbers next to 'lift' is corresponding millimetres in the made up manometer? 890 mm = 35" H20 , 364 mm = 14" h2o ?
Although those numbers can't be converted into CFM, we can see your baseline max flow of 413 mm @ .450" is now at .200" on the ported version. Given no valve job has been done, I would call that a success!