I think that all arm assys of Technics turntables are alike. To know for sure you should check with somebody from Technics, but I think those parts can be exchanged.
I'm not aware that Technics has improved the quality and amount of skating in their latest arms though...
changing the arm on you deck is not a job for starters. You should be able to deal with a soldering welt and some screwdrivers in order to replace it. This is NOT something I would reccommand doing when you've never done it before. The arm is the heart of your turntable. Messing it up could destroy your deck.
You want to change the entire upholstering for your arm? Like Lead said; thats not at all an easy job... i wasnt even aware that you could buy those components seperately. Changing the arm itself shouldnt be a problem, but everything that comes with it... good luck