Well problem fixed after aprox. $500 (canadian).
I have wanted to change the strainer on the fuel pump since I found out about the TSB on the car which caused the car to stall on right hand turns.
More recently the problem with the car wanting to stall and chugging while moving in a straight line prompted me to do the following.
Replaced the Gas Tank (was pretty rusty)
Replaced the Fuel Sending Unit (badly rusted)
Replaced the Fuel Pump & Strainer (new design for the strainer, longer)
Replaced the Straps, Fold Nuts and Bolts that hold the Tank
Replaced the Fuel Filter
Undercoated the car with Rubberised Ashfault undercoating
Bought new MagnaFlow Cat but have not installed as of yet.
My advice after this misson.........anyone who has not replaced the factory strainer (about the size of a large Tea Bag) and is having problems with the way the car runs, Replace it, mine was Black. If you don't have a hoist available to you, plan to spend a lot of time doing this job as it is not easy with Ramps or Stands.
Problem fixed...........Thx for all advice,