Finally solution

My doubt was made by fact that two engines were used, Napier Sabre Va and Napier Sabre II. Difference is big and as well Eduard provide mesh for model II this mean that I will do this one. Best part of the game is that I will have to use mixed method to make this section and this have to be made as well this is wide open and all inside is visible. First at all I have cut original plastic part no. 20 and remain to use just top part. Bottom and rear have to be upgraded and for this I use epoxy putty, well known Miliput White

One image show piece of plastic and lower visible is epoxy radiator. After it complete harden, I will make all surface structure, front will be Eduard mesh and rear will be on my own. One of the thing I have to do is the top wall and coolant pipe and there si nice place to use Albion Alloys tube.