To fit a 90mmDucted Fan in the fuselage, you would not have to scale up the F-35 V2 very much. To put it in a F-22 V1, you would need to scale it up and modify it quite a bit.
The F-22 V1 is the standard for most of the modern foamies, it was the first of its kind. With an "NTM Prop Drive Series 2836 2700kv" installed, its performance is off the chain. It has 39 ounces of thrust with plenty of power and speed. It would blow away a 90mmDucted Fan in the F-35 V2. For ether one, you will need a large flying area.
These blue short cuts go to some good information resources:
The Scratchbuilders Beginner's Guide
The walk through of a build.
Post 1 has short cuts to other helpful threads
An EDF thrust tube
Here, you will find the hows and whys of the thrust tube. It's easy to make a light thrust tube out of Mylar (a thin sheet of plastic) that will fit inside the fuselage.
Model: NTM Prop Drive Series 2836 2700kv
Motor Wind: 6T
Max current: 50A
Max Power: 520W @ 11.1/V (3S) / 595W @ 15v (4S)
Prop Test Data:
4.75x4.75 - 11.1V / 311W / 28A / 0.7kg thrust
4.75x4.75 - 14.8V / 594W /40A / 1.12kg thrust
5x5 - 11.1V / 400W / 36A / 0.85kg thrust
6x4 - 11.1V / 520W / 46.8A / 1.2kg thrust