False.Yes. It was derived from the V8 4.6L LS460.
The ISF engine was a variation of the 5.0 Liter V8 in the LS600H, without the hybrid components it made 389hp. After sending to Yamaha to get reworked, it made 416hp in the US.
False.Yes. It was derived from the V8 4.6L LS460.