Many of the US fighter pilot figures are depicting older style safety equipment like helmets and oxygen masks. PJ production released a nice version of current military “fast jet” pilot with a Joint Helmet Mounted Cueing System (JHMCS) and Gentex MBU-20 oxygen mask.
The product contains a single pilot figure and is marketed to work with F-16 or F-18 aircraft but after test fitting, it can be used in the F-15 as well. As with most figures, there may be places that need to be altered. When test fitting, the legs would need to be separated slightly to fit around center instrument panel and knees bent to rest on the rudder pedals. Some seats may also require the torso to be adjusted to fit the seat but nothing to great, just small adjustments. With all the variations of kits out there, nothing is simply drop in fit.