does anyone know why 3dr sierra's (and others) have vents fitted in the floor pan under the drivers and passenger footwells and also in the rear of the car. as they are covered by that rubberised matting which is stick down quite well i realy don't see what purpose they serve, or am i missing something?
also are there any threads on here explaining how to weld seams and where the seams should be welded for rally use. i have had a look through and can't see anything. pic of vents included so you all know what i mean. as usual any info greatly appreciated. thanks.