Can I pull out a Saginaw with the bell housing attached?

[6cylinderstepside]

I've done plenty of engine and transmission swaps and have been trying like heck to get the transmission out the correct way but the four transmission to bell housing bolts simply will not budge, I've used PB blaster and gone up to an 18" long 1/2" breaker bar, and don't have access to a strong impact and they are just not breaking loose, and I am not weak. I thought since I'm pulling the whole thing to install a TH350 anyway can I just pull it off with the bell housing attached and cut out the middle man? I don't know much about manual trannys.