I'd like to know once and for all what the correct factory horse power output of a '98 Diablo SV is. I'm quite certain that the '99 SV's put out 530hp. But I've read plenty of places where it states that the 530hp upgraded engine was first found in the '98 SV. One of those places being my factory owners manual spec page. But I also often read on many websites that the output of the '98 SV is only 510hp. Anyone know the correct answer for sure??