I realize that your kidding. I just replaced the oil pump in my LS7 with a LS9 pump. It runs a higher volume a the same pressure. After working on my aluminum 427 SO, the LS7 is an engineering marvel. Can't wait to fire it up for the 1st time.
I did the same on mine. Should be picking up the completed engine tomorrow. I had to wait to get the correct pilot bearing for the Ricardo/LS7 combo. I'll get some photos and post on my build.