The manual swap has been done a few times but normally for people looking for a trans to handle bigger power.
Parts you will need
One NV4500
One 5.7 to NV4500 bell housing
One 5.7 flywheel
One clutch and release bearing for a 5.7 engine with manual transmission
One ECU for a 5.7 with manual transmission or flash PCM for a manual
One transfer case that will bolt to the NV4500
One clutch kit
One ***** and master cylinder
Two drive lines front and rear or you can have them shortened
I have not done this swap myself, but this is what I could find off of Google for past swaps.
A junked or rebuilt 545 is pretty cheap, might be something to look into as it's a popular trans and the only difference between any of them is the tailshaft depending on 2wd/4wd and that can be reused from your truck.
