hi im up grading my brakes ive already got the bigger servo off a mk2 16v but i didnt get the master cylinder does any one no wot one i should get 4 ports (part numbers) and how much they would be and can u tell me wot else i might need and the other ting i need to no is i have 2 brake light switches on the original master cylinder thats on the car will both lights still work if i only use one switch