Hypersonic Models 1/48 Resin EA-6B Prowler Exhaust for Kinetic/ITA - HSMR48025
The instructions are based on fitting it to the Kinetic/Italeri kits, but the modeller may be able to adapt them to the Revell/Monogram kits.
This is a full-length resin exhaust and nozzle set with the specific detail for EA-6B Prowlers which have an upgraded engine and different nozzle to the A-6 Intruder family.