Latest on some possible 2014 rules changes:

NASCAR has been looking at new technical rules to tweak the cars for 2014. A mid-December test at Charlotte Motor Speedway, yet another NASCAR test there, should help set things. NASCAR is now expected to bring the ‘tapered spacer to the Cup series, to try to take 90 horsepower out of these 900 horsepower engines. NASCAR has tested a roof ‘wicker, running left-to-right, designed to disturb the air; that design was used some 10 years ago, briefly, but it appears the sanctioning body is rejecting that change. NASCAR will be using larger rear spoilers next season. And NASCAR is expected to add some holes in the rear bumpers, to vent under-car air flow.( MikeMulhern.net )