You can find tutorials on fitting cloths to V4. . .anywhere.  In a nut shell. . .

Load V4
Load and conform the clothing
Magnetize all cothing items to V4
Make sure V4 is selected and add body morph

Hope for the best!!!

Problems you'll run into will include:

No corresponding morph in cloths for morphs used in the body
The person who made the cloths renamed the morph (definition renamed to Toned, etc.)

Sometimes, simply loading the morph for the body into the clothing works. . .sometimes.

Plan on still turing dials, just maybe not as many.

Hope this helps! Look here or at DAZ for tutorials.