IWC davinci accurate version mod plan

[drebel]

Due to lack of an accurate version of IWC's Davinci , I'm thinking of buying two of these versions

IWC DA VINCI SS AUTOMATIC WHITE 08

http://www.kingshowbox.com/goods.php?id=1463

or this one

http://www.replicaexpert.us/IWC-DA-VINCI-A...RAPH-p-951.html

and this

http://www.kimsreplica.com/iwc-da-vinci-wh...tch-i-1106.html

or this

http://www.replicamaster.com/iwc-replica-v...rap-p-2199.html

or this

http://www.exactwatches.net/iwc-vinci-silv...ica-watch-2063/

Because of the dial and movement inaccurancies, I'm willing to buy the first version only for case purposes.That's why an accurate measure of the case dimensions (as well as the dial, if possible) is needed.My plan is to put in the first case ( the more accurate one) the movement and the dial of the second.

The gen and the second rep all say 43 mm case.

Do you think it's worth the trouble?Might it be a problem with chronometer push buttons?Are these sellers reliable?