The Great Wall Hobby 1/48 F-15 Eagle kits all suffer from inaccurate diameter intakes which are too small. These intakes correct that issue as well as providing a highly detailed fan section which is also the correct diameter. These intakes are near drop fit but some sanding is required to get them to fit perfectly. It will be noted in the instructions.
This set will make your Eagle stand out as well as give it the proper appearance as well as an accurate diameter and cross section
Master Pattern by Jens Brandal