Yes you do. It's piss easy though. All you have to do is cut a hole with a holesaw between the two studs that poke through from the pedal box. Then grind off the studs, and redrill new holes at the correct centres to bolt the master cylinder on, using longer bolts stuck through from the inside. Then just mark the pedal, take it off, and drill a hole in it to place a pin through to connect it to the master cylinder pushrod. the push rod wont line up perfectly with the pedal, but there is enough come and go in the rod to make it work.
Bluebird struts almost bolt straight in. You have to change the strut tops, and have a ring made to adapt the bottom of the strut, to the sunnylsteering arm.