Mocked up the Cayman alternator on the LS3. It could work but the power steering would be a pain. I was considering using the Porsche Motorsport electric setup but it's very expensive.
Swapped the valve covers to move the oil fill to the rear of the engine.
Nifty LS3 rocker setup. SBCs have come a long way!
Wound up getting the GM alternator and PS kit. All the parts including brackets and bolts were 1/3 the cost of just the PSM electric pump. I will need to do something with the PS res but otherwise this is plug and play.