I'll keep my eyes open brother!
That's why I went with the nv4500 set up. I didn't have to chase any parts. I got everything off of a '99 Dodge 3500 (adapter, flywheel, starter, tranny). With the engine offset 1" towards the passenger side just like the stock 289/302, the factory dodge cummins starter fits perfectly as it's on the driver's side.
I do know of people with the diesel ZF 5 that love them! And, they are much lighter as well!
My buddy is running an M5R2/NP205 with 3.27 gears and 33's. I don't know how it'll hold up long term, but it is very streetable and super fun to drive!
-Andy