B3030 and B2910 - same frame?

[B leever]

I'm wondering what the difference is between a B3030 frame and my B2910 frame? I have access to a 4 pt backhoe subframe for a B3030 and If it's as simple as drilling a hole where one isn't or grinding a tab to count it on my B2910 I'd be inclined to go for it. Anyone have any insight?
Thanks

 

[North Idaho Wolfman]

There is no frame on the back of either tractor.
The mounts are not universal, you would have to match the mount to the BH as well as the tractor.
The rear end and the loader that the subframe mounts to are completely different between the 2 models.

The mounts for the BH's for the B2910 are completely different than the mounts for the B3030.

I don't see a subframe for the B2910 as all the BH's appear to be three point BH's.

Example of subframe for B3030

 

[Mountainman]

If you can find one the bh4974 subframe is made for the b7800 which should also work on the b2910 and works with the bh75 and bh77 backhoe. They dont list it as working on the b2910 but i don't see why it wouldn't. Problemis finding one.