I have the new Woods 4 point hitch subframe with a Woods BH7500 backhoe installed on my TC33D (along with a Woods model 1012 loader). Here's a quote from the subframe installation manual:
</font><font color="blue" class="small">( Only use 1013460 4-Point Sub-Frame Mounting Kit for mounting Woods BH6500/7500 backhoe on New Holland® TC29DA and TC33DA tractors, equipped with Woods 1009 and 1012 loaders or New Holland 14LA loader.)</font>
Note I have the older TC33D, not the TC33DA, but after some checking with Woods, they said it would fit the 33D as well. The subframe was installed by my dealer. There were no problems with the installation other than needing to relocate the quick disconnects for one of my two rear hydraulic remotes.
I love the set up, and it works great! Easy on and off, and not as much ground clearance lost under the tractor as with some other subframes I've seen.
I can't guarantee it will work with the 7308 loader, but knowing that it works with the Woods 1012 loader on a TC33D, it should be a simple question for your dealer or the Woods Tech rep to see if it will work with your 7308 loader.
I don't have a mid-mount mower, but here's another quote from the subframe installation manual:
</font><font color="blue" class="small">( This mount can be installed on tractors equipped with a New Holland mid-mount mower. )</font>
Hope some of this helps.
John Mc