2015 NASCAR Sprint Cup Series Race Package includes:
-- Reduction of horsepower to 725 via tapered spacer - Not a big fan of horsepower reduction, but with a lower spoiler and reduced weight, it might not be so bad. Will have to wait and see.
-- Roller valve lifters to replace flat valve lifter - probably a good idea, resulting in engine reliability.
-- Lower rear differential gear ratios targeting 9,000 RPM - Better this way to control RPMs than a rev limiter like in most other racing series.
-- Rear spoiler adjustment to 6 inches high (2014 height: 8 inches) - Reduced downforce. Good idea.
-- Optional driver adjustable track bar - I have no problem with this.
-- 38-inch wide radiator pan - Ambivalent.
-- Minimum vehicle weight drops 50 lbs. via ballast reduction (2014 weight: 3,300 w/o driver) - Good move, in my opinion.
-- Updated qualifying formats for all tracks - Qualifying is greatly improved this year. Maybe it will get better.
· Rain tires on road courses, similar to rules in place for the NASCAR XFINITY Series and NASCAR Camping World Truck Series; mandatory wipers, defogger and rear flashing rain light installed for the event weekend - It's about time.