My brakes on my fiesta are in some serious need of replacement I put my reg in on Euro Car Parts and it gave me a choice of solid or vented brake discs. As I've had the brakes go weak going down hill with 4 people in it before I thought I would get vented, but according to the mechanic I spoke to if I've not already got vented, they won't fit?

My car is an early MIV 1.25 Ghia.