HELP L6/3speed to V8/3speed Questions

[kursed]

So getting ready to do this swap in "Nasty Nadine" My 1969 SWB
http://67-72chevytrucks.com/vboard/s...d.php?t=588280

It's currently running a 250 inline 6 and the factory 3 speed shift on column config.

I'm about to remove the 6 and install a 350 from a 1971 Camaro Z28

So far from the searching I've done on the forum I've learned that:
1) the motor mounts need to be swapped to V8 mounts
2) the radiator needs to be swapped for a V8 unit
3) some kind of clutch pivot ball bracket needs to be fabbed (found here: http://67-72chevytrucks.com/vboard/s...d.php?t=125834)

My main question is...

Will the 3 speed that's currently bolted to my L6 direct fit to my new V8 without any mods. In other words are the 3 speed bellhousings the same from L6 to V8 transmissions.

I'm trying to remember what I saw while working on it today and it seemed right, but I'm really really tired. I might be overthinking this as well. I tried searching all over the forums and could find countless L6 to V8 swaps, but it seems most folks are using auto transmissions or 4/5 speed manuals. I've never had a problem with the 3 speeds, so might as well leave it and see what it does right?