I have a buddy in Forest Grove, OR that wheels an 83 with a swaped in turbo (22RET) and 5.29s. It has tons of power, as long as he's spooled up. He runs a hydro assist with 37s and it steers with one finger even while wedged against rocks. Plenty of extra steering muscle.
The ram assist tapped into the stock power steering doesn't rob much power and it works great. He had the ram assist before the engine swap, and I don't remember it robbing much power, even from the old carb 22r. Big hydraulics are very cool, however, if I do any hydro in the future, it will be a simple ram assist not full hydraulic, based on his experience.