06' XC70 Front sway bar broke - replacement options

[Ringo]

The OEM front anti-sway bar broke (it’s hollow- not solid?) and I want to replace with either new OEM or preferably used. According to FCP the OEM bar for my 2006 T5 XC70 is Volvo part #31262929.

I found an ebay listIng from a guy parting out a 2004 S60R. I’ve heard that the R sway bars are also hollow, but they were made with a thicker walled steel and maybe a greater overall diameter? This used one on ebay is marked with a blotch of green paint. I've come to understand that some OEM sway bars are marked with blue, some are marked green, some marked with an X or 2 or a 3 or a white stripe...

I'd like to use the beefier S60R bar, but I don't know how to find out what I might have unless I remove it! FCP says my car takes 31262929 “marked X“ and it the same part also fits the 2004 S60 “marked X, green”
https://www.fcpeuro.com/products/volvo- ... 29#fitment

Can anyone give me insight into the markings - do you think I can successfully replace my broken bar with this beefier S60R bar? Are the Rs solid steel or hollow? Do I need different hanging hardware or bushings?
Thanks

[MoVolvos]

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Unless you are tracking the car or drive like a demon in the streets just get a bar that will fit your car. Best go with an OE or a bar from a similar model and year as a stiffer front bar will increase under-steer which is not a good feeling. Volvo's design generally creates under-steer.

As for the marking, like the springs I've not seen anyone provide an answer. My take is a combination of spring rates and or to differentiate the various outsource manufacturers.
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