Hi everyone, this is my 1st post here and I am hoping to get some help?

I am 3/4 of the way through building a 1:6th scale P51 Mustang.

a rough review of the build can be seen here

http//www.airbornemagazine.com.au/constructreview/p51/

I am having trouble knowing how to attach the engine cowling to the main Fuselage. The fuselage is made from Balsa with ply bulkheads.
I have fashioned the cowling from Fibreglass in one piece. So, it has to be attached at the back end of the cowling, There is nowhere else to screw it on.

So, my question is!!
What is the best way to attach the Fibreglass Cowling? I thought maybe I could use some Aluminium angle screwed to the front bulkhead??
The only way I can think of doing that is with self tappers and the Fibreglass cowling won't handle that type of pressure for very long.

Can someone here assist me with your best practice for doing this job because there are virtually no instructions and I'm reasonably new to building model aeroplanes.

Thanks for any help! and Hi from Australia!!!