A very common place for the PS to leak is at a PS steel line where it
routs to the right of the egnine. This is a high corrosion area. If
youhave a 83.5-early 85,your steel coolant tubes are right behind the PS
lines as far as corroding through, goes. That is the bad news.

The good news is that there are several ways to fix the PS lines. The
easiest way is to cut the bad area out and splice in a high pressure(fuel
line) rubber hose and use hose clamps on each end.The corroded  area will
look like the surface of the moon. Easy to find ,even without a telescope.

You can replace the entire PS line and expect lots of work.Use rubber fuel
line and rout it the entire way.You can also put in new metal lines. This
is very expensive.They are 10 feet long. When you find some for sale,
shipping will be $125 by UPS.I wire wheeled a set and painted them with
POR15 gloss black. Very good ,uncorroded conditon and beautiful !! It took
awhile to sell them because the buyers did not understand the shipping
costs.

I think you should go with a splice ,if this is your problem.Another way
the PS leaks is at the end of the steering racks life. The seals on either
side of the rack,near the rubber boots will leak.Eventually they leak
profusely. PS fluid stop leak will not fix it. Best to remove the V-belt
and use non power  steering.This is a reasonable fix.I have been doing it
for years.No problems.