I found a forum post with pictures of the inverter. The G92A0-28010/28011/28012 fits the Estima starting with the 28010 in 2006, then the 28011 came along in 2008 and the 28012 in 2012. Since the hybrid Alphard/Vellfire was only released in 2011 it only got the 28011 and 28012 versions. According to ...

Hi @neelkanth, I'm currently plotting a similar project, although I don't yet own an Alphard - currently looking for one at a suitable price that I don't mind hacking it about, perhaps with a sick hybrid battery. I don't plan to remove the engine, just make it a PHEV.

I currently own a Gen2 Prius ...