You need to check the fuel pressure when this is happening. Get a fuel pressure gauge with a hose long enough to run it up to the wiper area and drive the car and see what the pressure is as it has problems. They run $30-$35.

 

Update: alright so i def got the power back. Replaced the spark plugs/ wires and i was only able to change one o2 sensor( the pass. Side one would not come out regardless of the tool i used) and she feels much stronger. The stalling/bogging at stop lights were not noticeable. I spent 12 freakin hrs just to swap out everything and check every inch of the car. Now i think i have bigger issues and they explain the "hiccup" feeling while driving on the highway and my rpms dropping and going back up randomly.... Tranny leak and possibly an oil leak. After i swapped out everything tonight, i put in some trans fluid, which it needed and test drove her on the hwy. well, all i saw was smoke in my car and smoke coming from the back of my car. I decided to stop and check and theres trans fluid all over the bottom of the car and all over my rear bumper, rear lights and license plate... Time to takle that now :/