If you are looking to improve the appearance of the nose on your 1/72 scale EMHAR F-3H Demon, I would direct your attention to this new release from Pavla Models. Recommended for the EMHAR kit released in 1991, this replacement nose is a clear advancement over the old plastic nose provided in the kit. Modelers with some experience in using resin parts should have no issues with utilizing this part.
As I stated in another recent review, from my perspective, Pavla Models continues to quietly add new items to their product lines in order to add detail to existing kits; many of these lines are intended for aircraft modelers, but there are some AFV items as well. Pavla Models provides replacement canopies that are vacuum-formed as well as cockpit sets, ejection seats, and general detail sets for aircraft.