Bonnet Vent's *fitting*
 

Hi there, i was woundering if anybody knew how to fit bonnet vent's on fiesta's, the rs turbo bonnet vent's, there there any messurement's i have to messure before cutting the bonnet and what would be the best way ? i was going to drill the bonnet and then some how cut the gap out and sand it down and glue the vent's from underneeth in place ?