I've got a Fender Mustang with a 22.5” scale neck. I've tried the guitar in a Fender case from 1965 (Gray exterior, orange inside) but it seemed to slide inside the case.
1968 Comp Red Mustang with 22.5" scale neck - OffsetGuitars.com
Mustang Template Set - Potvin Guitars
What Is Guitar Scale Length? - The Guitar Gear Guru
Disado 22 Frets Maple Electric Guitar Neck Maple Fretboard Inlay Stars Wood Color Guitar Accessories Parts Can Customized - Guitar Parts & Accessories - AliExpress
Conversion necks – Deimel Guitarworks
Jackson JS Series RR Minion JS1X 22.5" Scale Electric Guitar Metallic Blue Burst
Gretsch G5700 Electromatic Lap Steel - Tobacco Sunburst | Sweetwater