Brakes for my bus

[lister]

http://www.vdubcustoms.com/Tech/tech_pbrake.htm

I was looking at this link
would it be possible to machine the outer edge of my hub down to the same diameter as the 89-91 S2 and use their rotors bolted to the front of my hub as they look the same height in the pics

i know i will have to weld a bit of alloy on and drill and tap for mounting the rotor thats not a prob

How much smaller in diameter is the S2 hub

cheers for the replys so far

Rob