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Those look like the narrow ones, Steve. The newer, wider ones have the side of the pivot boss that can be seen in your photo (the side towards the tensioner "foot") coming out about flush with that tensioner foot. That's the whole idea; to better support it in line with where the tensioner puts pressure on it.
You can't use your old tensioners with the new idler arms. They share that common mounting pin. When the boss on the idler arm gets wider, it intrudes into the space needed for the boss on the tensioner. The 930 tensioners have a narrower boss to accomodate this.
Take a look at the price of a new set of 930 tensioners. You will notice it's not much less than the Carrera pressure-fed kit. I just went through this myself. I wound up with the Carrera tensioners.
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Jeff
'72 911T 3.0 MFI
'93 Ducati 900 Super Sport
"God invented whiskey so the Irish wouldn't rule the world"
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