Hi Fritzy.
I'm in the same boat...except I'm just dreaming at this point.
Based on my "extensive" research on this site, and in speaking to dealers the Woods "x" series is the only BH that offers a 4 point sub frame for the 3030 with cab.
My dealer told me it was possible to make the BH75 work, but he didn't recommend it. I didn't get the details.
I sent an enquiry to Wallenstein, as they are Canadian, make good stuff and have a good looking new backhoe, but go no response on the 3030 with cab question.
The biggest question with the Woods unit is BH70X or BH80X. You'll find lots of opinions on that if you do a search. You’ll also see that it is suggested that you get the wheel spacers, as Turfs will rub in the mounting brackets.
Best of luck, and have fun.
JL