Replacing Logic Board between SR and Penryn possible?

There's quite a bit of swapping necessary to upgrade to the Penryn:

• The upper case connector on the logic board is moved to the left in the Penryn machines, so you'd need the Penryn upper case
• The keyboard has a different part number, so you'd need the Penryn one.
• The bluetooth is different in the Penryn, but I think it's just the difference between 2.0 in the SR and 2.1 in the Penryn.
• The heat sink has the heat transfer pads in different locations, so you'd need the Penryn heat sink.
• the fans have a different model number, so you'd assumedly need the Penryn fans.
• The battery cable is different, so you'd need the Penryn batt connector
• The left and middle thermal sensors have different numbers printed on them, but I don't know if they're compatible
• the I/O board cable has a different model number printed on it, so you'd assumedly need the Penryn verson.
• The I/O board is a different model number printed on it, so you would need the Penryn version.

In other words, I don't think it's financially worth it. Replacing all these parts is probably getting as expensive as a refurbished newer model machine.

Sorry!