You guys and gal are good!
I installed the SXGA+ Flexview panel last night. My A31 (2653-Q5U) was one of the models with a Flexview panel. I've been wanting to try this experiment for a while, so when the A31 died and I got the G40 back it was the perfect chance to try transplant. In between I also tried it out in a R51E (didn't work).
Its pretty much a straight swap. emeraldgirl08 confirmed that a R4x panel works in a R5x, and I knew that a A3x panel would work in a R5x (from experience)... and thinkwiki showed that the R4x was compatible with the G4x.
No crazy stuff required on my end. I had to put a fold in the LCD ribbon cable to shorten it, and the power leads to the inverter had to be extended. I clipped off the end from a bad panel and soldered it on. I almost burned it up on accident when I got the wires flipped. Fortunately, I caught this error before powering it up.
This transplant should also work with a T4x or R5x IPS panel.