IF you can get a wrench on it. And that's a really big IF. The cooler lines access issue is the biggest hassle with a SyTy trans r&r, IMO.
The down pipe and torsion bar makes it pretty much impossible to access these fittings with the trans in place. Removing the cross-member, and T-Case, dropping the rear of the trans, and then reaching forward, may facilitate the task, but its a LONG reach. And still a little more work than "just"...
Plus, why are they leaking? There's probably something wrong, that is going to require dissasembly. Probably the best approach will be to remove the down-pipe for access.
:2cents:
DaveP