as far as I know, nobody has ever tooled the Early Mid roof with the appropriate track holder spacing. This is why I recommend using a kit with separate parts.
I tried to deduce the positioning from photos and this is what I got, but I should really check this against the newly discovered photos;
The hull for your project would be exactly the same as on the final Early Tigers. The turret, however, is unique and not available from anywhere in correct form.
David