My Friend
nether am I lol
.. it was some ideas i had.. and remember the speed loss of the DII was only slight i don't remember any speed loss from radiator types from one to an other do you?? humm. but Junker did extensive test with the radiator playment and found out that under the wing or fuselage was much better place for it like the under the wing of the JI and under the fuselage of the iron airplane so it must have some merit even then no mater the hp !!
... Doug