Got out the die grinder and went to work on the transmission this weekend. Went much easier than I thought it would. I just snuck up on it, taking small cuts until everything just cleared.
Definitely still have a lot of material left where I carved so I'm not worried about strength. Popped some new seals in the trans and took the flywheel to be resurfaced this morning. I'm gonna hold off on getting the clutch fully rebuilt - there's a good bit of material left on the clutch disc and the pressure plate is in decent shape so I'm gonna risk it. I'm hoping to have the trans installed this week so I can measure for the driveshaft. Still need to get my frame welded up too.