xjmxstac wrote:Also keep in mind that some rev-up motors have oil burning issues. But ultimately, it's HP vs. Torque. Non rev-up: 287hp @ 6200rpm, 276lb/ft. torque @ 4800 rpm. Rev-up 300hp @ 6600rpm, 260lb/ft. torque @ 4800rpm.
Many non-rev-ups had oil burning issues as well. A good friend of mine had a serious one.
As for output, its not going to be a big deal. The Rev-up has more HP and in the end that's generally what is most important. Problem is that the same year the Rev-up motor was added, the Z's weight went up as well.
But if the weight wasn't an issue, the rev-up would be the better motor from a power output perspective. Personally, I'd go for an 06+ just for the interior changes though.