4.6l TDC and Timing

[Number4]

I'm tearing into the engine to replace timing components. I don't have a pressure gauge and am trying to determine TDC.
My first question is does it matter if I'm on TDC for Intake or Exhaust for this procedure?

Had my wife "plug" the hole for cylinder #1 , then I turned the engine.
Two full rotations. She said she felt the same amount of pressure on both.
By rotations, I'm referring to the mark on the crank pulley lining up with the TDC mark on the engine. Two times.
So I wasn't able to determine which was exhaust and which was the intake stroke.

I can get a gauge from HF if it's that important.

 

[EXPLORER04]

Here's the section from the ford manual if it helps:

https://drive.google.com/file/d/0B2rg5by6lQO3ZENZV1BiLUZSSHc/view?usp=sharing

 

[Number4]

Here's the section from the ford manual if it helps:

https://drive.google.com/file/d/0B2rg5by6lQO3ZENZV1BiLUZSSHc/view?usp=sharing

Thanks for the info. Went to HF and for $20, plus $4 in gadgets for the kid and $11 for ice cream on the way home I now know which stroke is TDC.

Now, onto the crank pulley which doesn't want to accept any of my bolts to pull it off.