I'm about 99% sure Serk will not fit in a fighter

It's amazing what Serk can cram himself in to if the experience is worth it... I MADE myself fit in the IROC car.

And granted, I more put this car on as opposed to getting in it, but dangit, I did it!

I hear what you're saying about desire - but as someone who HAS flown in tactical jets - you're not going to fit - safely (i.e. the ejection system will take off below your knees, or you might not even fit for the back / headrest ). And Russian equipment is , in general - fitted to a smaller person than American equipment is....