Mock turbine exhaust and cowl for 73" Mystic?

[lt130th]

I'm leaning heavily towards going with the entire Farnsworth Low Altitude paint job for this build, but I'm having a hard time finding the parts for mocking up faux turbine exhausts and the cowl on the back of the cockpit. Anyone know where I can get these without doing a full DIY from scratch?

TURBINEANDCOWL.jpg

Thanks,
Michael P.