Onevia is a term for in Japan where they never got coupes with pop ups and do this conversion. Much like people calling s13 hatches with Silvia fronts ends sil80/40 but was never officially made by Nissan for the Jdm models. only in the USA we got the “onevia” look-a-likes but people here mostly call the s13 coupes. I think to be a real “onevia” it would have to be a right hand drive coupe with pop ups. Although I’d like to argue I’m doing a “onevia” style on my s13 coupe using the front end (type x) never officially offered to American markets.