If you know the Italian Air Force you know Frecce Tricolori.
This aerobatic team uses a special version of the Aermacchi MB.339 trainer, fitted with a custom made smoke system for air display. 

The petroleum jelly oil burned to produce smokes is carried in two underwing tank pods that all the available scale kits forgot to feature and are quite different from those used for the old Fiat G.91PANs.