Early Napier Lion lookalikes

[Orzel]

I am trying to convert a 1/72 Walrus into a fictional plane called the Vickers Vandal and it had an Early Napier Lion engine. Sadly there are no 1/72 early model Napier Lion engines except in kits so I am trying to find engines that look alike the early models of the Napier Lion.

 

[AMCKen]

Years ago I put together this spreadsheet of 'W' style engines. May or may not be any help.