5 Lug Swap Power Booster Question

This swap is pretty similar to a swap done on a 5.0, so you can ask there as well

Basically if you are using 95GT front and rear brakes then you need the 94-95 GT/V6 MC and booster

Yes, the bolt pattern is a little different. 3 holes line up, 1 does not. You can slot/redrill for this one. OR, you can purchase a 1993 Cobra master cylinder which is virtually the same (some would even same the same) but featured the correct Fox-specific bolt pattern and thread pitch (SN95 is metric, Fox is SAE).

As for the brake line plumbing...yes. It's unique. You can't use your original MC though., you'll need the SN95 MC. If you are using 95 GT front and rear brakes, the 94-95 GT/V6MC is your choice. You'll need a 3-2 port conversion to install it.

I usually recommend to try it first, but don't be surprised if you find you need to stand on the pedal to get the car to stop. Also, you can usually "cheat" a bit if you undersize the MC slightly to gain more mechanical assist vs vacuum assist.

When i did my Cobra front and rear brakes, i left the fox booster in. Stopping the car felt like doing quad excercises. I could stop the car fast, but it took a lot of pedal effort. I swapped to an SN95 booster and it greatly reduced the amount of effort needed.

I find brake feel to be reliative to the individual user. I drove an explorer the other day with 150K miles. Brake fluid was BLACK! Obviously never bled. Pedal was spongy as hell. I recommended a brake fluid flush to my friend who shot it down saying the pedal "felt great and they don't like sensitive brakes" . So to each their own. I garantee you there are guys out there than prefer the firmer pedals associated with leaving the fox boosters.