would buying aftermarket calipers clear insted of grindin on the stock ones

 

Doubt it ... most of the aftermarket stuff is for bigger brak, which means bigger calipers.

 

I'm runnin' eagle alloys at the track, they're light and they're cheap as in $65 a wheel. The 8" stock wheel is cool . Wonder what they weigh. My front runners weigh 14 lbs. Don't have the backs yet but I'm thinking 16 lbs.