Slow Coolant Leak - 04 DC 4.7 2WD

Hey Everyone, could use some help processing through fixing my coolant leak. Here's the details.

• Slow coolant leak -- need to fill the reservoir once a month
• Only visible place I see the leak is on the front of the transmission
• Engine and radiator were replaced a year ago
• Have not pressure tested or used to dye to isolate the leak

I've read the other posts about the three common issues to cause a coolant leak, and I'm leaning towards it being the crossover bar beneath the intake manifold. My guess is that the seals were messed up when dropping the engine in and connecting it to the transmission.

Questions

1. Y'all think that's the issue?
2. If so, how hard is it to replace those seals on your own? I don't have a ton of experience working on the truck, but I'm patient, love to learn, and really don't want to pay someone to do it? Is it worth coughing up the $$ to have someone to do it?
3. If I do it on my own, where would you recommend finding the right parts?
4. Anything else I'm missing or not thinking about?

 

Use dye and pressure test. Duh

you'll get your answer

 

Can you add some photos of the leak, does it leak more when parked at an incline?

Put a flashlight under the throttle body (in-between the engine valley) and see if you see coolant next to the crossovers)

https://www.tundras.com/threads/coolant-leak-bypass-pipe-o-ring.81275/