Chip or Programer Help

I just bought a 2001 Ford F250 Superduty 7.3ltr powerstroke. It has a gauge pillar pod w/ boost gauge, pyrometer and trans temp. And an aftermarket exhaust. I figure it has a chip or programer but how can I confirm that. I want to buy one or the other if not. What chips do you guys suggest?

Ok I removed the two rearward 7mm screws on the black plastic case holding the ecu. I could not get the ecu out but I removed the black plastic cover. On the rearward facing edge of the aluminum ecu case there is a square hole where you can visible see the circuit board. There is a visible connector area on this board but I do not see anything attached to the ecu itself. There was no cover or tape over the rear slot in the ecu so I believe the customer must have removed the chip since he bought another powerstroke.

BUT.....If the previous customer has used a programer such as a hypertech would it be bad news to install a chip. I am trying to get the previous owner's contact information from the dealership....wish me luck on that one.

Got ahold of the previous owner and he did have a chip installed, but removed it when he sold the truck.

Does anyone have any input on chips or programmer. I am leaning toward a Superchips programmer as the last 2 vehicles I've had got Hypertech programing and I was not to impressed.