Was just about to do my conversion. Was told that i am going to need a larger master cylinder? I have 2 integra DA "drop ins" i replaced the bushings and have a perportion valve. Was told it is a 40/40. Or i believe thats what it is. I have drum on rear now. Do i need mastercylinder

 

not unless you use a teg master cylinder no. the booster is needed to fit the bigger teg mc. you can stay with your current mc and be fine if your just swapping the rears

 

I have Good master cylinder right now. Didnt want to go through all the troubles yanking a new part. So i can use the civic master cylindr. Thanks for letting me know But is there going to be a Mushy pedal?