Sputter on acceleration 4.6

I have a 1997 Ford Mustang Gt. With the cold air intake, and egr delete kit on there. The car ran like a champ until the other day. With the car in park I can rev the engine no problem but once I put it in gear and hit the accelerator it sputters like it want to die it does this in reverse and drive. The car has no engine power at all I can’t even pull in my driveway forward or backwards without it losing power. Please help me
 
A bog is likely fuel a sputter is likely spark. Make sure each of your plug wire boots are seated correctly (not too old) and the plugs are in good working order.

My plugs I believe were original at 65,000 miles and were worn down to the tips looking round at over 0.075 gap! It was surprising how well the car ran and smooth!

One unseated spark plug wire, barely clicked in, car seemed fine at idle and for a bit ran smooth then out of no where sputtering upon throttle tip in. Reseated them and voila no problem.

Check spark first! (our cars are wasted spark design so it will chew up most plugs that are not "double platinum" this is my understanding).