why would it be a pain to get working? you can buy the lockup kits and make it work or DIY it.
I hear they are weaker then reg. th350. You gotta make sure you get a torque converter with it, or buy a 350c converter which is lockup, that saves you some gas.
driveshaft mods may be in order, to make it work, you'd need an auto coumn and linkage or a floor shifter and cut/drill holes to make it work.
You need an external trans cooler, biggest gvw rating you can get since it's stand alone, OR swap to an auto radiator with built in cooler.
You will also need to tap into a vac. source for the modulator. I tapped into my power brake booster rubber line to run a th350 in my 88 4x4.