Having problems with coil packs, my struggling to accelerate?

there is always a chance of getting a bad one from anywhere

I agree with goodguy! Maybe the coil aint your problem!! If a misfire is what you are chasing, possible restricted injector, vacuum leak or low compression. Any codes?

ALSO CK TO MAKE SURE YOU DID NOT BEND PRONGS INSIDE PLUG AT COIL PAK IT HAPPENS