Hi, I can just link You to the Cousins.UK page, maybe You will need to sign up: https://www.cousinsuk.com/search?SearchTerm=dg+2813. There is no guarantee it will fit, but it´s not too big an investment either. You need hand setting and hand removal tools, small screwdrivers, a loupe, an airduster can for cleaning pcs. There are many good and detailed pictorials, try some searches on google, also check some videos on Youtube. I think in the first step I would just take out one movement and drop in the other, before trying things like changing the rotor, the datewheel overlay and the crown (it could be the stem and crown You have just fit the new movement, even better). On cousins.uk they sell all kinds of equipment in cheap, Indian or Chinese versions too. As long as we are not servicing a movement, for starters they do the job more than well.