try logging on to iatn.net. and see if there is a reputable auto shop
in your local area listed and have your car diagnosed there. if you are
intent upon do-it-yourself, then you did not mention replacing the
rotor inside the dist.cap. (very important). also you can have someone
gently remove your spark plug wires,one at a time, from your dist. cap
while the engine is running and hold them away from the cap and then
replace it and listen to see if it makes a difference in how your
engine runs. you have to be careful though, it will shock you a little
if youre not careful. if when you remove a plug wire and the engine
remains running the same, then you know that that particular cylinder
isn't hitting. you can then determine what your problem with each
particular cyl. is.  i would advise you to at least have the local hot
-rod boy in the neighborhood do this. look around, every neighborhhod
has one/