Here are some drop-in replacement thrust nozzles for the 80mm nacelles on the freewing A-10.
I have modeled 2 variants for new nozzles. 1 is a reduced FSA to about 91%, while the other ones maintains 100% FSA, but uses and inner nozzle to look more scale, and the horizontal supports are angled upward to help with the thrust line.
Stock replica (third thrust tube in the lineup picture) is not being included as I don't believe I have permission to do so.
add a 5mm brim to keep from lifting.