Which MBs will work for this R51?

[seaweedsl]

I have my eye on a motherboard for my R51 that is going soon on ebay and thought I'd run a second thread asking if anybody has a quick suggestion for making sure one will fit.

I have what I believe is the replacement number for it, but assume that there are many more that would work and be an upgrade.

Product: ThinkPad R51 2888-WC1
Original description: Based on 2888-CTO: Celeron M 350, ...14.1 XGA....Intel Extreme....

I found this somewhere for FRUs on the 2888:

System board assembly
32MB ATI Radeon 7500, 10/100 Ethernet
Supported by CTO 91P7331

Supported by CTO 93P3778 replaces 27K9920

So, will anything that works for a 14" R or T work or what? The one I have my eye on is 27K9926 but I just don't know.

Any clues on sorting this one or future possibilities out? As I said, I imagine that many will work but a few won't....how to tell?

Thanks,
Steve