Are Mark Bass Combo Heads Interchangeable?

[forestfire]

I own a Mark Bass CMD 102P and I love it but I was wondering if the Combo Head II that is tightly seated within the cabinet can be swapped out with say a Little Mark Tube 800. Anyone tried this? I removed the Combo Head II to take some measurements and I'm a bit confused as the height of the Little Mark Tube is a bit taller but maybe they are measuring it with the feet on? Also the depth is a bit off too but perhaps they are measuring to the end of the knobs? Thanks in advance for your input.

 

[mmbongo]

Due to warranty concerns of the 102P speakers not being able to handle the bigger amp, I would think not.

 

[PhatBasstard]

Yes, I've done exactly this.
All Little Mark heads have the same framework.
The Combo Head II that is currently inside it is just a rebranded Little Mark III.

Now, if any of it is still under warranty, this would likely void it.