Great post SK, but the bit I've quoted is not entirely true.
A well built modern day converter should still retain sufficient efficiency to drive nicely on the street.
Although it's not a Skyline, I have a 3000rpm converter in my car, and it is efficient enough that it will still creep at idle if you do not have your foot on the brake. When you accelerate lightly, it "flashes" to a higher rpm than it would with a standard converter, but not to full stall speed. Stomp it and of course it will flash all the way.
I love my converter, but my advice to ANYONE considering this modification is to drive a car equipped with one before deciding - they are definitely not for everyone, as they change the characteristics of the car greatly.
As for the recommendations for MV Automatics, I live in SA and know a number of people who have had trans work done by them in a range of cars. I'm yet to hear a bad story.