Well first, the oil in an AC sys distributes itself all through the the
system when operating. When you pull a component and replace it you should
basically put the same amount of oil back in as came out with the old
component (by any chance did you drain and measure the oil in the old
compressor ?). Same goes for the dryer. There is exact guidance in the
service manuals on component oil replacemant quantities. The Ford manual for
a 95X says

"if the amount of oil drained from the removed compressor is between 4 and
5 oz pour the same amount of new oil into the new compressor". Different
answer if you drain more or less out. It does not say where to add the oil.
I think there is a plug. The oil quantity for the accumulator drier is 3
oz.in a 95X.

In a 94X I think you might be looking at R12 refridgerant too.  Another
problem.   Might want to consider switching to a "drop in" replacement like
Freeze 12. It works good. Might be R134a. Be sure.

Now replacing the dryer. Ford makes it so you can replace the dryers. The
connections are probably spring lock fittings and require a special removal
tool to open.

Doing this work is not diffulct but getting the system to really work good
is.

Take care - Jerry

As Gerald has indicated, there is much more to AC repair than installing new
parts. Even the instructions from the supplier assume that you are familiar
with AC repair. To avoid repeat failures, I recommend purchasing a manual to
help you with your endeavour. I'm not sure about the generic shop manuals
but most factory manuals do have a listing of any caveates. It is important
to familiarize ourselves with those things we are trying to repair... if we
don't know how they work we can cost ourselves needlessly...