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Could you further explain this process? , it sounds very interesting and something I could try.
Thanks,
Viper

I do not know the dials in chest/neck/head area. If both figures has similar bones following trick should works.

1. Load V43 figure.
2. Using hierarchy editor hide all body part leaving visible only head, neck and eyes
3. Load V3 figure with morphs (or inject desired morphs)
4. In hierarchy editor hide head and eyes
5. Select V43 and conform to V3
6. ATM your figures have 2 necks visible - hide one of them, later unhide first and hide second neck and check which one suit better.

If you find head or neck bended unnatural, it means that bones are different. You can fix it fast as hairs fixing I've explained here:
http://www.renderosity.com/mod/forumpro/showthread.php?message_id=3293183
Not always works (offset fixing can be required either)

I hope I helped