Frame vin and cab vin

[OJ1988]

With the recent talks of vin stamping on frame comparing to the cab, I thought I would bring this up.

I know the total history of my truck, its easy to track, the Air Force owned it for many years.

However, My frame vin is one number off from my cab.

These aren't the actual numbers but here is what i mean.

Cab abc12345

frame abc12346

Seems odd, but I doubt someone would have found another truck that was next in production and swapped cabs.

What do you guys think?